The following discussion and analysis of our financial condition and results of
operations should be read in conjunction with our condensed consolidated
financial statements and related notes appearing elsewhere in this Quarterly
Report on Form 10-Q and our Annual Report on Form 10-K. In addition to
historical financial information, the following discussion and analysis contains
forward-looking statements that are based upon current plans, expectations, and
beliefs that involve risks and uncertainties. Our actual results may differ
materially from those anticipated in these forward-looking statements as a
result of various factors, including, but not limited to, those set forth under
the section titled "Risk Factors" in Item 1A of Part II of this Quarterly Report
on Form 10-Q and in our Annual Report on Form 10-K. Our fiscal year ends January
31.
                                    Overview
Slack is a new layer of the business technology stack where people can work
together more effectively, connect all their other software tools and services,
and find the information they need to do their best work. Slack has very general
and broad applicability. It is not aimed at any one specific purpose, but at
nearly anything that people do together at work. Slack is used to review job
candidates, coordinate election coverage, diagnose network problems, negotiate
budgets, plan marketing campaigns, approve menus, and organize disaster response
teams, along with countless other tasks.
Slack provides an easy way for users to share and aggregate information from
other software, take action on notifications, and advance workflows in a
multitude of third-party applications, over 2,300 of which are listed in the
Slack App Directory. Developers have collectively created more than 700,000
third-party applications or custom integrations that were used in a typical week
during the three months ended July 31, 2020. Further, Slack's platform
capabilities extend beyond integrations with third-party applications and allow
for easy integrations with an organization's internally-developed software.
                                COVID-19 Update
In March 2020, the World Health Organization declared COVID-19 a global
pandemic. This contagious disease outbreak, which has continued to spread, and
the related public health measures, including orders to shelter-in-place, travel
restrictions, and mandated business closures, have adversely affected
workforces, organizations, customers, economies, and financial markets globally,
leading to an economic downturn and increased market volatility. It has also
disrupted the normal operations of many businesses, including ours.
We have experienced volatility in customer demand and buying habits due to the
COVID-19 pandemic. At the beginning of the COVID-19 pandemic, we experienced a
significant increase in demand and usage of Slack, including an increase in our
number of Paid Customers. While we do not expect the significant increase in the
number of net new Paid Customers associated with the initial shelter-in-place
orders related to the COVID-19 pandemic to recur, we have experienced an
acceleration in our Paid Customer growth during the six months ended July 31,
2020. However, the rate of growth of total organizations on Slack has reverted
to a level more in-line with trends we experienced prior to the COVID-19
pandemic. In addition, we have experienced an increase in paid customer churn
and a decrease in expansion within existing paid customers during the six months
ended July 31, 2020. We expect these paid customer churn and expansion trends to
continue due to the effects of the COVID-19 pandemic. We define paid customer
churn as paid customers reducing the number of users within their organizations
or electing not to renew their paid subscriptions.
The COVID-19 pandemic and its adverse effects have been more prevalent in the
locations where we, our customers, suppliers, and third-party business partners
conduct business. This outbreak, as well as intensified measures undertaken to
contain the spread of COVID-19, have decreased IT spending for many
organizations, adversely affected demand for Slack, attrition rates, the ability
of our salespeople to travel to potential customers and of our customer success
team to conduct in-person trainings and consulting work, negatively impacted
expected spending from new and existing customers, increased sales cycle times,
negatively impacted collections of accounts receivable, caused certain of our
paid customers to file for bankruptcy protection or go out of business, and
harmed our business, results of operations, and financial condition. We expect
these negative impacts will continue due to the effects of the COVID-19
pandemic. In addition, to prepare for potential surges in demand, we have
incurred, and may continue to incur, additional costs and make additional
investments in order to meet the demands of increased customer usage of Slack
and additional product development efforts during this time may put additional
pressure on our technical infrastructure. The broader implications of COVID-19
on our results of operations and overall financial performance remain uncertain.
The COVID-19 pandemic has resulted in, and any prolonged economic slowdowns may
continue to result in, paid customers on Slack requesting us to renegotiate
existing contracts on less advantageous terms to us than those currently in
place, defaulting on payments due on existing contracts, not renewing at the end
of the contract term, or choosing to renew with
                                       25
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a smaller commitment than previous contracts. For example, in an effort to
assist both new and existing paid customers facing challenges due to the
economic impact of the COVID-19 pandemic, we have entered into, and expect to
continue to enter into, more custom contracts and billing arrangements with new
and existing paid customers, which may be less advantageous to us than our
standard term contracts. These arrangements have included provisions such as the
ability to defer payments, to pay in installments or over longer time periods,
and other collection flexibility. We have also granted, and may in the future
grant, billing concessions to existing paid customers. We do not expect these
billing arrangements to have a significant impact on our future revenue, but
they will negatively impact our future Calculated Billings and Free Cash Flow.
The COVID-19 pandemic also presents challenges as our entire workforce is
currently working remotely and shifting to assisting new and existing customers
who are also generally working remotely. All of our currently planned customer,
employee, and industry events have been shifted to virtual-only experiences, and
we may deem it advisable to similarly alter, postpone, or cancel entirely,
additional customer, partner, employee, or industry events in the future.
Furthermore, in June 2020, we announced that we would allow many of our
employees to work remotely on a permanent basis. We have a limited history of
having a remote workforce and the long-term impact on, and the resulting types
of continuing investments for, our employee base is uncertain. In addition, we
may incur increased workforce costs, including costs associated with
implementing additional personnel and workplace safety protocols, the accrual of
unused paid time off, and workplace or labor claims and disputes related to
COVID-19.
While we have developed and continue to develop plans to help mitigate the
potential negative impact of the outbreak on our business, these efforts may not
be effective and a protracted economic downturn will likely limit the
effectiveness of our mitigation efforts. Due to our subscription-based business
model, the effect of the COVID-19 pandemic may not be fully reflected in our
results of operations until future periods, if at all. We are continuing to
understand the long-term net effect and anticipated future magnitude of the
above factors on our results for future periods and such forecasts are
inherently uncertain. See Part II, Item 1A, "Risk Factors" for further
discussion of the possible impact of the COVID-19 pandemic on our business,
financial condition, and results of operations.
                              Key Business Metrics
We review the following key business metrics to measure our performance,
identify trends, formulate financial projections, and make strategic decisions.
We are not aware of any uniform standards for calculating these key metrics,
which may hinder comparability with other companies who may calculate
similarly-titled metrics in a different way.
We define an organization as a separate entity, such as a company, educational
or government institution, or distinct business unit of a company, that is on a
subscription plan, whether free or paid. Once an organization has three or more
users on a paid subscription plan, we count them as a Paid Customer, and when
disclosing the number of Paid Customers, we round down to the nearest thousand.
Paid Customers
We believe that the growth in our Paid Customer base reflects our value
proposition and positions us for future growth as our Paid Customers often
expand their adoption over time and Paid Customers increase awareness of Slack,
which leads to organic adoption by new organizations. Our Paid Customers base
has expanded through increasing awareness of Slack, further developing our
go-to-market strategy and continuing to build features tuned to different
industry needs. Our Paid Customer base includes organizations of all sizes
across a wide range of industries.
As of July 31, 2020 and 2019, we had approximately 130,000 and 100,000 Paid
Customers, respectively.
Paid Customers >$100,000
We focus on growing the number of Paid Customers >$100,000 as a measure of our
ability to scale with organizations on Slack and attract larger organizations to
Slack. We believe that our ability to increase the number of Paid Customers
>$100,000 is a key indicator for important components of the growth of our
business, including our success in expanding the number of users within a Paid
Customer, providing the functionality required by large organizations and
developing our direct sales force.
We define Paid Customers >$100,000 as those organizations on a paid subscription
plan that had more than $100,000 in annual recurring revenue, or ARR, as of a
period end. ARR is based on monthly recurring revenue, or MRR, for the most
recent month at period end, multiplied by twelve. For Paid Customers that have a
type of subscription agreement where billing is reconciled on a monthly or
quarterly basis based on usage, MRR is calculated by multiplying the monthly
subscription price, inclusive of discounts, by the number of active
subscriptions as of the month end. For Paid Customers that have a type of
subscription agreement where billing is fixed and independent of usage, MRR is
calculated by multiplying the monthly subscription price, inclusive of
discounts, by the number of purchased subscriptions.
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As of July 31, 2020, we had 985 Paid Customers >$100,000, who contributed
approximately 49% of revenue for each of the three and six months then ended. As
of July 31, 2019, we had 720 Paid Customers >$100,000, who contributed
approximately 43% of revenue for each of the three and six months then ended.
Net Dollar Retention Rate
We disclose Net Dollar Retention Rate as a supplemental measure of our organic
revenue growth. We believe Net Dollar Retention Rate is an important metric that
provides insight into the long-term value of our subscription agreements and our
ability to retain, and grow revenue from, our Paid Customers.
We calculate Net Dollar Retention Rate as of a period end by starting with the
MRR from all Paid Customers as of twelve months prior to such period end, or
Prior Period MRR. We then calculate the MRR from these same Paid Customers as of
the current period end, or Current Period MRR. Current Period MRR includes
expansion within Paid Customers and is net of contraction or attrition over the
trailing twelve months, but excludes revenue from new Paid Customers in the
current period, including those organizations that were only on Free
subscription plans in the prior period and converted to paid subscription plans
during the current period. We then divide the total Current Period MRR by the
total Prior Period MRR to arrive at our Net Dollar Retention Rate.
As of July 31, 2020 and 2019, our Net Dollar Retention Rate was 125% and 136%,
respectively. Our Net Dollar Retention Rate has declined year over year as our
base of revenue has grown and our penetration within existing, long-term Paid
Customers has increased. Our Net Dollar Retention Rate will fluctuate in future
periods due to a number of factors, including the growing level of our revenue
base, the level of penetration within our Paid Customer base, expansion of
products and features, and our ability to retain our Paid Customers.
                          Non-GAAP Financial Measures
In addition to our results determined in accordance with U.S. generally accepted
accounting principles, or GAAP, we believe the below non-GAAP measures are
useful in evaluating our operating performance. We use the below non-GAAP
financial information, collectively, to evaluate our ongoing operations and for
internal planning and forecasting purposes. We believe that non-GAAP financial
information, when taken collectively, may be helpful to investors because it
provides consistency and comparability with past financial performance, and
assists in comparisons with other companies, some of which use similar non-GAAP
financial information to supplement their GAAP results. The non-GAAP financial
information is presented for supplemental informational purposes only, and
should not be considered a substitute for financial information presented in
accordance with GAAP, and may be different from similarly-titled non-GAAP
measures used by other companies. A reconciliation is provided below for each
non-GAAP financial measure to the most directly comparable financial measure
stated in accordance with GAAP. Investors are encouraged to review the related
GAAP financial measures and the reconciliation of these non-GAAP financial
measures to their most directly comparable GAAP financial measures.
                                                                                                                 Six Months Ended
                                                     Three Months Ended July 31,                                     July 31,
                                                       2020                  2019               2020                2019
                                                                                (In thousands)
Calculated Billings                              $      218,198          $ 174,807          $ 424,207          $   324,444
Free Cash Flow                                   $       10,774          $  (7,871)         $  14,457          $   (42,074)


Calculated Billings
Calculated Billings consists of our revenue plus the change in our deferred
revenue in a given period. The Calculated Billings metric is intended to reflect
sales to new paid customers plus renewals and additional sales to existing paid
customers. Our management uses Calculated Billings to measure and monitor our
sales growth because we generally bill our paid customers at the time of sale,
but may recognize a portion of the related revenue ratably over time. For
subscriptions, we typically invoice our paid customers at the beginning of the
term, in annual or monthly installments and, from time to time, in multi-year
installments. Only amounts invoiced to a paid customer in a given period are
included in Calculated Billings. While we believe that Calculated Billings
provides valuable insight into the cash that will be generated from sales of our
subscriptions, this metric may vary from period-to-period for a number of
reasons, and therefore has a number of limitations as a quarter-over-quarter or
year-over-year comparative measure. These reasons include, but are not limited
to, the following: (i) a variety of contractual terms could result in some
periods having a higher proportion of annual subscriptions than other periods,
(ii) as we focus on sales to large organizations, the lengthening of our sales
cycle, and the variability in the timing of the execution of these larger
transactions, (iii) fluctuations in payment terms affecting the billings
recognized in a particular period, and (iv) seasonality in our billings, with a
greater proportion of our billings occurring in our fourth quarter, following
typical enterprise
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software buying patterns. Because of these and other limitations, you should
consider Calculated Billings along with revenue and our other GAAP financial
results.
The following table presents a reconciliation of revenue, the most directly
comparable financial measure calculated in accordance with GAAP, to Calculated
Billings, for each of the periods presented:
                                                                                                          Six Months Ended
                                              Three Months Ended July 31,                                     July 31,
                                                2020                  2019               2020                2019
                                                                         (In thousands)
Revenue                                   $      215,864          $ 144,973          $ 417,514          $   279,794
Add: Total deferred revenue, end of
period                                           383,407            286,523            383,407              286,523
Less: Total deferred revenue, beginning
of period                                       (381,073)          (256,689)          (376,714)            (241,873)
Calculated Billings                       $      218,198          $ 174,807          $ 424,207          $   324,444


Free Cash Flow
Free Cash Flow is a non-GAAP financial measure that we calculate as net cash
provided by (used in) operating activities less purchases of property and
equipment. We believe that Free Cash Flow is a useful indicator of liquidity
that provides information to management and investors about the amount of cash
generated from our core operations that, after the purchases of property and
equipment, can be used for strategic initiatives, including investing in our
business, making strategic acquisitions, and strengthening our balance sheet.
Free Cash Flow has limitations as an analytical tool, and it should not be
considered in isolation or as a substitute for analysis of other GAAP financial
measures, such as net cash provided by operating activities. Some of the
limitations of Free Cash Flow are that this metric does not reflect our future
contractual commitments and may be calculated differently by other companies in
our industry, limiting its usefulness as a comparative measure. We expect our
Free Cash Flow to fluctuate in future periods as we invest in our business to
support our plans for growth. These activities, along with certain increased
operating expenses as described below, may result in a decrease in Free Cash
Flow as a percentage of revenue in future periods.
The following table summarizes our cash flows for the periods presented and
provides a reconciliation of net cash from operating activities, the most
directly comparable financial measure calculated in accordance with GAAP, to
Free Cash Flow, for each of the periods presented:
                                                                                                           Six Months Ended
                                               Three Months Ended July 31,                                     July 31,
                                                 2020                  2019               2020                2019
                                                                          (In thousands)
Net cash provided by (used in) operating
activities                                 $       14,471          $     321          $  23,200          $   (13,805)
Purchases of property and equipment                (3,697)            (8,192)            (8,743)             (28,269)
Free Cash Flow                             $       10,774          $  (7,871)         $  14,457          $   (42,074)
Net cash provided by investing activities  $       78,317          $ 239,131          $  42,853          $   344,591
Net cash provided by (used in) financing
activities                                 $       (4,618)         $   2,334          $ 751,343          $     4,719



                    Key Components of Results of Operations
Revenue
We generate substantially all of our revenue through sales of subscriptions of
Slack to organizations. We recognize subscription revenue on a straight-line
basis over the term of the contract subscription period beginning on the date
access to Slack is granted, provided all other revenue recognition criteria have
been met. Our subscriptions are generally non-cancellable and typically do not
contain general rights of return. We maintain a fair billing policy, under which
certain organizations on a paid subscription plan are entitled to credit if they
have not used the entirety of the contracted number of users for which they have
paid during the contractual term of the arrangement. These credits, accounted
for as a part of deferred revenue, may be carried over to offset future billings
and are not refundable for cash. On occasion, we also provide professional
services to organizations on Slack. Professional services revenue has not been
material to date.
Overhead Allocation and Employee Compensation Costs
We allocate shared costs, such as facilities (including lease, utilities, and
depreciation on equipment shared by all
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departments) and information technology, or IT, costs to all departments based
on headcount. As such, allocated shared costs are reflected in cost of revenue
and each operating expense category. Employee compensation costs, or personnel
costs, include salaries, bonuses, benefits, and stock-based compensation for
cost of revenue and each operating expense category and also includes sales
commissions for sales and marketing.
Cost of Revenue
Cost of revenue consists primarily of expenses related to hosting Slack and
providing ongoing customer support for paid customers. These expenses include
employee compensation (including stock-based compensation) and other
employee-related expenses for customer experience, professional services, and
technical operations staff, payments to outside service providers, third-party
hosting costs, payment processing fees, and amortization expense associated with
internally-developed and purchased technology. We expect our cost of revenue to
continue to increase in absolute dollar amounts as we grow our business and
revenue.
Operating Expenses
Research and Development. Research and development expenses consist primarily of
personnel costs and allocated overhead. Our research and development efforts
focus on maintaining and enhancing existing functionality of, and adding new
functionality to, Slack. We plan to increase the dollar amount of our investment
in research and development for the foreseeable future as we focus on developing
new features and enhancements. We expect, however, that our research and
development expenses will decrease as a percentage of our revenue over time as
our revenue grows, although the percentage may fluctuate from period to period
depending on fluctuations in the timing and extent of our research and
development expenses.
Sales and Marketing. Sales and marketing expenses consist primarily of personnel
costs, expenses associated with our marketing and business development programs,
including Frontiers, our annual user conference, Spec, our annual developer
conference, and other events, sponsorships, and Slack conferences. Sales and
marketing expenses also include allocated third-party hosting costs as well as
customer experience and technical operations employee overhead costs for users
of our free version of Slack. Sales commissions that are directly related to
acquiring sales contracts, as well as associated payroll taxes, are deferred
upon execution of a non-cancellable contract with an organization, and
subsequently amortized to sales and marketing expense over the estimated period
of benefit, typically four years. We plan to increase the dollar amount of our
investment in sales and marketing for the foreseeable future, primarily for
increased headcount for our direct sales organization and investment in brand
and product marketing efforts. We expect to continue to incur sales and
marketing expenses to the extent that we continue to see a high-growth market
opportunity to support the growth of our business. If the growth in our business
lessens over time, we plan to decrease the rate of growth in our sales and
marketing expenses. We expect, however, that our sales and marketing expenses
will decrease as a percentage of our revenue over time as our revenue grows,
although the percentage may fluctuate from period to period depending on
fluctuations in the timing and extent of our sales and marketing expenses.
General and Administrative. General and administrative expenses consist
primarily of personnel costs for our finance and accounting, legal, human
resources, and other administrative teams as well as for certain executives and
professional fees, including audit, legal, and recruiting services. We expect to
increase the size of our general and administrative function to support the
growth of our business. We expect to incur additional expenses as a result of
operating as a public company, including costs to comply with the rules and
regulations applicable to companies listed on a U.S. securities exchange and
costs related to compliance and reporting obligations pursuant to the rules and
regulations of the Securities and Exchange Commission, or the SEC, and increased
expenses in the areas of insurance, investor relations, and professional
services. As a result, we expect the dollar amount of our general and
administrative expenses to increase for the foreseeable future. We expect,
however, that our general and administrative expenses will decrease as a
percentage of our revenues over time, although the percentage may fluctuate from
period to period depending on fluctuations in our revenue and the timing and
extent of our general and administrative expenses.
Interest Expense
After our issuance of 0.50% convertible senior notes due 2025, or the Notes, in
an aggregate principal amount of $862.5 million in April 2020, interest expense
consists primarily of contractual interest expense and amortization of the
discount and debt issuance costs on our Notes.
Interest Income and Other Income, Net
Interest income and other income, net consists primarily of interest income
earned on our cash, cash equivalents, and marketable securities, gains or losses
on foreign currency exchange, and the change in fair value of our strategic
investments.
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Provision (Benefit) for Income Taxes
Provision (benefit) for income taxes consists primarily of U.S. federal, state
income taxes, and income taxes in certain foreign jurisdictions in which we
conduct business. Since inception, we have incurred operating losses and,
accordingly, have not recorded a provision for income taxes for any of the
periods presented other than provisions for foreign income tax.
                             Results of Operations

The following tables set forth our results of operations for the periods presented in dollars and as a percentage of our revenue:


                                                                                                              Six Months Ended July
                                                   Three Months Ended July 31,                                         31,
                                                    2020                  2019                2020                 2019
                                                                              (In thousands)
Revenue                                       $      215,864          $  144,973          $  417,514          $    279,794
Cost of revenue(1)                                    28,387              31,106              53,989                49,680
Gross profit                                         187,477             113,867             363,525               230,114
Operating expenses:
Research and development(1)                           94,201             217,769             185,426               268,872
Sales and marketing(1)                               109,122             136,392             219,442               203,230
General and administrative(1)                         52,788             123,356             103,442               160,100
Total operating expenses                             256,111             477,517             508,310               632,202
Loss from operations                                 (68,634)           (363,650)           (144,785)             (402,088)
Interest expense                                     (11,552)               (208)            (14,394)                 (321)
Interest income and other income, net                  6,952               3,319              11,660                10,509
Loss before income taxes                             (73,234)           (360,539)           (147,519)             (391,900)
Provision (benefit) for income taxes                     (81)               (923)                 61                  (403)
Net loss                                             (73,153)           (359,616)           (147,580)             (391,497)
Net income (loss) attributable to
noncontrolling interest(2)                             1,695                 (54)              2,479                 1,397
Net loss attributable to Slack                $      (74,848)         $ 

(359,562) $ (150,059) $ (392,894)

_______________

(1)Includes stock-based compensation as follows:


                                                                                                                      Six Months Ended
                                                          Three Months Ended July 31,                                     July 31,
                                                            2020                  2019               2020                2019
                                                                                     (In thousands)
Cost of revenue                                       $        2,544

$ 10,952 $ 4,898 $ 10,998 Research and development

                                      29,157            151,405             56,576              153,040
Sales and marketing                                           14,917             64,772             28,992               65,154
General and administrative                                    10,670             58,658             20,533               60,234
Total stock-based compensation                        $       57,288

$ 285,787 $ 110,999 $ 289,426




(2)Our condensed consolidated financial statements include our majority-owned
subsidiary, Slack Fund. The ownership interest of minority investors in Slack
Fund is recorded as a noncontrolling interest.
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                                                                                                               Six Months Ended July
                                                 Three Months Ended July 31,                                            31,
                                                 2020                   2019                  2020                   2019
Revenue                                              100  %                 100  %                100  %                 100  %
Cost of revenue                                       13                     21                    13                     18
Gross profit                                          87                     79                    87                     82
Operating expenses:
Research and development                              44                    150                    44                     96
Sales and marketing                                   51                     95                    53                     73
General and administrative                            24                     85                    25                     57
Total operating expenses                             119                    330                   122                    226
Loss from operations                                 (32)                  (251)                  (35)                  (144)
Interest expense                                      (5)                     -                    (3)                     -
Interest income and other income, net                  3                      2                     3                      4
Loss before income taxes                             (34)                  (249)                  (35)                  (140)
Provision (benefit) for income taxes                   -                     (1)                    -                      -
Net loss                                             (34)                  (248)                  (35)                  (140)
Net income (loss) attributable to
noncontrolling interest                                1                      -                     1                      -
Net loss attributable to Slack                       (35) %                (248) %                (36) %                (140) %



Comparison of the Three Months Ended July 31, 2020 and 2019 Revenue and Cost of Revenue


                        Three Months Ended July 31,
                            2020                  2019         $ Change      % Change
                               (In thousands)
Revenue           $      215,864               $ 144,973      $ 70,891           49  %
Cost of revenue           28,387                  31,106        (2,719)          (9)
Gross profit      $      187,477               $ 113,867      $ 73,610           65


Revenue increased $70.9 million, or 49%, for the three months ended July 31,
2020 compared to the three months ended July 31, 2019. The increase in revenue
was primarily due to expansion within our existing Paid Customers, as reflected
by our Net Dollar Retention Rate of 125% as of July 31, 2020, and the addition
of new Paid Customers, as our number of Paid Customers grew from 100,000 as of
July 31, 2019 to 130,000 as of July 31, 2020.
Cost of revenue decreased $2.7 million, or 9%, for the three months ended
July 31, 2020 compared to the three months ended July 31, 2019. The decrease was
primarily due to a $9.1 million decrease in stock-based compensation and related
employer payroll taxes, as compared to the three months ended July 31, 2019 when
stock-based compensation and related employer payroll taxes were higher due
primarily to the satisfaction of the performance vesting condition on
outstanding RSUs in connection with our direct listing of our Class A common
stock on the New York Stock Exchange, or the Direct Listing, in June 2019. This
decrease was partially offset by a $4.2 million increase in third-party hosting
fees as the number of organizations on and, users of, Slack in general
increased, and a $2.3 million increase in personnel and related costs due to
additional headcount to support the growth in organizations on Slack.
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Operating Expenses
                                   Three Months Ended July 31,
                                       2020                  2019          $ Change       % Change
                                          (In thousands)
Operating expenses:
Research and development     $       94,201               $ 217,769      $ (123,568)         (57) %
Sales and marketing                 109,122                 136,392         (27,270)         (20)
General and administrative           52,788                 123,356         (70,568)         (57)
Total operating expenses     $      256,111               $ 477,517      $ (221,406)         (46)


Research and Development
Research and development expenses decreased $123.6 million, or 57%, for the
three months ended July 31, 2020 compared to the three months ended July 31,
2019. The decrease was primarily due a $132.4 million decrease in stock-based
compensation and related employer payroll taxes, as compared to the three months
ended July 31, 2019 when stock-based compensation and related employer payroll
taxes were higher due primarily to the satisfaction of the performance vesting
condition on outstanding RSUs in connection with the Direct Listing in June 2019
and a $2.5 million decrease in travel costs due to COVID-19 travel restrictions.
These decreases were partially offset by an $11.8 million increase in personnel
costs related to increased headcount.
Sales and Marketing
Sales and marketing expenses decreased $27.3 million, or 20%, for the three
months ended July 31, 2020 compared to the three months ended July 31, 2019. The
decrease was primarily due to a $53.4 million decrease in stock-based
compensation and related employer payroll taxes, as compared to the three months
ended July 31, 2019 when stock-based compensation and related employer payroll
taxes were higher due primarily to the satisfaction of the performance vesting
condition on outstanding RSUs in connection with the Direct Listing in June 2019
and a $2.6 million decrease in travel costs due to COVID-19 travel restrictions.
These decreases were partially offset by a $14.7 million increase in personnel
costs, which include customer experience and infrastructure employee costs for
users of our free version, a $10.6 million increase in marketing expenses due to
more spending on advertising, and a $3.7 million increase in third-party hosting
costs for users on a Free subscription plan of Slack primarily due to continuing
growth in our user base.
General and Administrative
General and administrative expenses decreased $70.6 million, or 57%, for the
three months ended July 31, 2020 compared to the three months ended July 31,
2019. The decrease was primarily due to a $51.5 million decrease in stock-based
compensation and related employer payroll taxes, as compared to the three months
ended July 31, 2019 when stock-based compensation and related employer payroll
taxes were higher due primarily to the satisfaction of the performance vesting
condition on outstanding RSUs in connection with the Direct Listing in June 2019
and a $28.1 million decrease in fees related to financial advisory services,
audit, and legal expenses, which we incurred in the three months ended July 31,
2019 in connection with the Direct Listing. This decrease was partially offset
by an $8.8 million increase in consulting expenses related to legal fees and
acquisition-related costs, and a $3.1 million increase in personnel costs
related to increases in our administrative, finance and accounting, legal, IT,
and human resources headcount.

Interest Expense
Interest expense increased by $11.3 million for the three months ended July 31,
2020 compared to the three months ended July 31, 2019, due to contractual
interest expense and amortization of the discount and issuance costs on the
Notes.
Interest Income and Other Income, Net
Interest income and other income, net was $7.0 million for the three months
ended July 31, 2020, an increase of $3.6 million from the three months ended
July 31, 2019. The increase in interest income and other income, net was
primarily driven by a net increase in realized and unrealized gains from our
strategic investments of $4.3 million and an increase of net foreign exchange
gains of $2.3 million, partially offset by a decrease of interest income of $2.6
million due primarily to a decrease in interest rates.

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Provision (Benefit) for Income Taxes
The benefit for income taxes was $0.1 million for the three months ended
July 31, 2020, an increase of $0.8 million from the three months ended July 31,
2019, primarily related to a decrease in tax benefit resulting from stock-based
compensation of our foreign jurisdictions. This increase was partially offset by
tax benefit from the Rimeto acquisition and a change in the United Kingdom tax
rate.
           Comparison of the Six Months Ended July 31, 2020 and 2019

Revenue and Cost of Revenue


                        Six Months Ended July 31,
                           2020                 2019         $ Change       % Change
                              (In thousands)
Revenue           $      417,514             $ 279,794      $ 137,720           49  %
Cost of revenue           53,989                49,680          4,309            9
Gross profit      $      363,525             $ 230,114      $ 133,411           58



Revenue increased $137.7 million, or 49%, for the six months ended July 31, 2020
compared to the six months ended July 31, 2019. The increase in revenue was
primarily due to expansion within our existing Paid Customers, as reflected by
our Net Dollar Retention Rate of 125% as of July 31, 2020, and the addition of
new Paid Customers, as our number of Paid Customers grew from 100,000 as of
July 31, 2019 to 130,000 as of July 31, 2020.
Cost of revenue increased $4.3 million, or 9%, for the six months ended July 31,
2020 compared to the six months ended July 31, 2019. The increase was primarily
due to a $6.6 million increase third-party hosting fees as the number of
organizations on and, users of, Slack increased, a $3.7 million increase in
personnel and related costs due to additional headcount to support the growth in
organizations on Slack, and a $1.1 million increase in payment processing fees
for customer credit card payments. This increase was partially offset by a $6.6
million decrease in stock-based compensation and related employer payroll taxes,
as compared to the six months ended July 31, 2019 when stock-based compensation
and related employer payroll taxes were higher due primarily to the satisfaction
of the performance vesting condition on outstanding RSUs in connection with the
Direct Listing in June 2019 and a $0.5 million decrease in travel costs due to
COVID-19 travel restrictions.
Operating Expenses
                                   Six Months Ended July 31,
                                      2020                 2019          $ Change       % Change
                                         (In thousands)
Operating expenses:
Research and development     $      185,426             $ 268,872      $  (83,446)         (31) %
Sales and marketing                 219,442               203,230          16,212            8
General and administrative          103,442               160,100         (56,658)         (35)
Total operating expenses     $      508,310             $ 632,202      $ (123,892)         (20)


Research and Development
Research and development expenses decreased $83.4 million, or 31%, for the six
months ended July 31, 2020 compared to the six months ended July 31, 2019. The
decrease was primarily due to a $104.4 million decrease in stock-based
compensation and related employer payroll taxes, as compared to the six months
ended July 31, 2019 when stock-based compensation and related employer payroll
taxes were higher due primarily to the satisfaction of the performance vesting
condition on outstanding RSUs in connection with the Direct Listing in June 2019
and a $1.5 million decrease in travel costs due to COVID-19 travel restriction.
This decrease was partially offset by a $23.0 million increase in personnel
costs related to increased headcount.
Sales and Marketing
Sales and marketing expenses increased $16.2 million, or 8%, for the six months
ended July 31, 2020 compared to the six months ended July 31, 2019. The increase
was primarily due to a $27.6 million increase in personnel costs, which include
customer experience and infrastructure employee costs for users of our free
version, a $21.1 million increase in marketing
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expenses due to more spending on advertising, a $5.5 million increase in
third-party hosting costs for users on a Free subscription plan of Slack
primarily due to continuing growth in our user base, and a $3.4 million increase
in facility- and IT-related overhead costs to support our headcount growth. This
increase was partially offset by a $38.5 million decrease in stock-based
compensation and related employer payroll taxes, as compared to the six months
ended July 31, 2019 when stock-based compensation and related employer payroll
taxes were higher due primarily to the satisfaction of the performance vesting
condition on outstanding RSUs in connection with the Direct Listing in June 2019
and a $2.6 million decrease in travel costs due to COVID-19 travel restriction.
General and Administrative
General and administrative expenses decreased $56.7 million, or 35%, for the six
months ended July 31, 2020 compared to the six months ended July 31, 2019. The
decrease was primarily due to a $42.2 million decrease in stock-based
compensation and related employer payroll taxes, as compared to the six months
ended July 31, 2019 when stock-based compensation and related employer payroll
taxes were higher due primarily to the satisfaction of the performance vesting
condition on outstanding RSUs in connection with the Direct Listing in June
2019, a $30.4 million decrease in fees related to financial advisory services,
audit, and legal expenses, which we incurred in the six months ended July 31,
2019 in connection with the Direct Listing, and a $3.2 million decrease in
travel costs due to COVID-19 travel restriction. This decrease was partially
offset by an $11.3 million increase in legal fees and acquisition-related costs
and a $7.6 million increase in personnel costs related to increases in our
administrative, finance and accounting, legal, IT, and human resources
headcount.
Interest Expense
Interest expense increased by $14.1 million for the six months ended July 31,
2020 compared to the six months ended July 31, 2019, due to contractual interest
expense and amortization of the discount and issuance costs on the Notes.
Interest Income and Other Income, Net
Interest income and other income, net was $11.7 million for the six months ended
July 31, 2020, an increase of $1.2 million from the six months ended July 31,
2019. The increase in interest income and other income, net was primarily driven
by a net increase in realized and unrealized gains from our strategic
investments of $2.9 million and an increase of net foreign exchange gains of
$2.8 million, partially offset by a decrease of interest income of $4.2 million
due primarily to a decrease in interest rates.
Provision (Benefit) for Income Taxes
The provision for income taxes was $0.1 million for the six months ended
July 31, 2020, an increase of $0.5 million from the six months ended July 31,
2019, primarily related to a decrease in tax benefit resulting from stock-based
compensation of our foreign jurisdictions. This is partially offset by tax
benefit from the Rimeto acquisition and a change in United Kingdom tax rate.
                        Liquidity and Capital Resources
As of July 31, 2020, our principal sources of liquidity were cash, cash
equivalents, and restricted cash of $1.4 billion and marketable securities of
$217.0 million. Cash and cash equivalents are comprised of bank deposits, money
market funds, and certificates of deposit. Restricted cash consists of cash
deposited with financial institutions as collateral for our obligations under
the facility leases in San Francisco, California and Denver, Colorado. As of
July 31, 2020, our restricted cash totaled $38.5 million. Marketable securities
are comprised of certificates of deposit, commercial paper, U.S. agency
securities, U.S. government securities, international government securities, and
corporate bonds. As of July 31, 2020, 83% of all cash and cash equivalents are
held in the United States. Since our inception, we have financed our operations
primarily through proceeds from the issuance of our convertible preferred stock,
convertible senior notes, common stock, and cash generated from the sale of our
subscriptions.
We have generated significant losses from operations and negative cash flows
from operating activities in the past as reflected in our accumulated deficit of
$1.4 billion as of July 31, 2020. We expect to continue to incur operating
losses for the foreseeable future due to the investments that we intend to make
in our business and, as a result, we may require additional capital resources to
grow our business.
In April 2020, we completed our private offering of the Notes and received
aggregate proceeds of $862.5 million, before deducting issuance costs of $21.2
million. In connection with the Notes, we entered into privately negotiated
capped call transactions with certain counterparties, or the Capped Calls, with
respect to our Class A common stock. We used an aggregate amount of
$105.6 million of the net proceeds from the sale of the Notes to purchase the
Capped Calls.
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In May 2019, we entered into a $215.0 million revolving credit and guaranty
agreement with a syndicate of financial institutions. The revolving credit
facility has an accordion option, which, if exercised, would allow us to
increase the aggregate commitments by up to the greater of $200.0 million and
100% of the consolidated adjusted EBITDA of us and our subsidiaries, plus an
unlimited amount subject to satisfaction of certain leverage ratio based
compliance tests after giving effect to the exercise, in each case subject to
obtaining additional lender commitments and satisfying certain conditions.
Pursuant to the terms of the revolving credit facility, we may issue letters of
credit under the revolving credit facility, which reduce the total amount
available for borrowing under such facility. As of July 31, 2020, we had no
amounts or letters of credit issued and outstanding under the revolving credit
facility. Our total available borrowing capacity under the revolving credit
facility was $215.0 million as of July 31, 2020.
We believe that current cash, cash equivalents, marketable securities, and
available borrowing capacity under the revolving credit facility will be
sufficient to fund our operations for at least the next 12 months. Our future
capital requirements, however, will depend on many factors, including our
subscription growth rate, our Net Dollar Retention Rate, the timing and extent
of spending to support our research and development efforts, the expansion of
sales and marketing activities, the introduction of new and enhanced products
and features, particularly for large organizations and for networks between
organizations and the continuing market adoption of Slack. We may in the future
enter into arrangements to acquire or invest in complementary businesses,
services, and technologies, including intellectual property rights. In the event
that additional financing is required from outside sources, we may seek to raise
additional funds at any time through equity, equity-linked arrangements, and
debt. If we are unable to raise additional capital when desired and at
reasonable rates, our business, results of operations, and financial condition
would be adversely affected. See the section titled "Risk Factors-Risks Related
to Our Business-Our failure to raise additional capital or generate cash flows
necessary to expand our operations and invest in new technologies and customer
acquisition efforts in the future could reduce our ability to compete
successfully and harm our results of operations."
Cash Flows
The following table summarizes our cash flows for the periods indicated:
                                                                       Six Months Ended July 31,
                                                                        2020                  2019
                                                                             (In thousands)
Net cash provided by (used in) operating activities               $       23,200          $ (13,805)
Net cash provided by investing activities                                 42,853            344,591
Net cash provided by financing activities                                751,343              4,719

Net increase in cash, cash equivalents and restricted cash $ 817,396 $ 335,505




Cash Provided by (Used in) Operating Activities
Our largest source of operating cash is cash collections from organizations on a
paid subscription plan. Our primary uses of cash from operating activities are
for employee-related expenditures, sales and marketing expenses, and third-party
hosting costs. Historically, we have generated negative cash flows from
operating activities and have supplemented working capital requirements through
net proceeds from the private sale of equity securities.
During the six months ended July 31, 2020, operating activities provided $23.2
million in cash. The primary factors affecting our operating cash flows during
this period were our net loss of $147.6 million, impacted by $155.9
million non-cash charges and $14.9 million of cash provided from changes in our
operating assets and liabilities. The non-cash charges primarily consisted
$111.0 million in stock-based compensation, $17.3 million of non-cash operating
lease expenses, $13.6 million of depreciation and amortization, $12.6 million of
amortization of debt discount and issuance cost and $6.9 million of amortization
of deferred contract acquisition costs, partially offset by a $5.8 million net
gain as a result of the change in fair value of our strategic investments. The
cash provided from changes in our operating assets and liabilities was primarily
due to a $33.5 million decrease in accounts receivable, reflecting an increase
in collections and seasonal decrease in billings, a $5.7 million increase in
deferred revenue due to additional billings with new and existing paid
customers, and a $3.0 million increase in accrued compensation and benefits.
These amounts were partially offset by $16.4 million of operating lease
payments, a $4.5 million increase in prepaid expenses and other assets, a $4.0
million decrease in accounts payable due to the timing of payments, and a $2.3
million decrease in other liabilities.
During the six months ended July 31, 2019, operating activities used $13.8
million in cash. The primary factors affecting our operating cash flows during
this period were our net loss of $391.5 million, impacted by $300.4
million non-cash charges and $77.3 million of cash provided from changes in our
operating assets and liabilities. The non-cash charges primarily consisted of
$289.4 million in stock-based compensation, $12.7 million of depreciation and
amortization, and $3.3 million of amortization of deferred contract acquisition
costs, partially offset by a $2.9 million gain as a result of the change in fair
value
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of our strategic investments and a $1.7 million gain of net amortization of bond
discounts on debt securities available for sale. The cash provided from changes
in our operating assets and liabilities was primarily due to a $44.7 million
increase in deferred revenue due to additional billings with new and existing
Paid Customers, a $19.8 million increase in accrued compensation and benefits
mainly due to taxes withheld from vesting of RSUs for certain foreign employees,
a $15.3 million decrease in accounts receivable due to timing of billings and
collections, and a $9.2 million increase in accrued expenses and other
liabilities as a result of our increased spending and headcount associated with
the growth of our business. These amounts were partially offset by a $10.2
million increase in prepaid expenses and other assets and a $1.4 million
decrease in accounts payable due to the timing of payments.
Cash Provided by Investing Activities
Net cash provided by investing activities during the six months ended July 31,
2020 was $42.9 million, which was primarily driven by maturities and sales of
marketable securities of $153.7 million and net cash acquired from a business
combination of $6.6 million, partially offset by purchases of marketable
securities of $100.3 million, strategic investments of $9.0 million, and
property and equipment of $8.7 million.
Net cash provided by investing activities during six months ended July 31, 2019
was $344.6 million, which was primarily driven by maturities of marketable
securities of $435.0 million, partially offset by cash used to purchase
marketable securities of $59.6 million and property and equipment of $28.3
million.
Cash Provided by Financing Activities
Net cash provided by financing activities for the six months ended July 31, 2020
was $751.3 million, primarily driven by proceeds from issuance of the Notes of
$841.3 million, net of issuance costs, proceeds from employee purchases of
common stock under the employee stock purchase plan of $16.6 million, and the
exercise of stock options of $4.6 million, partially offset by a payment for
Capped Calls related to the Notes of $105.6 million and payments of contingent
consideration for acquisitions of $5.3 million.
Net cash provided by financing activities for the six months ended July 31, 2019
was $4.7 million, primarily driven by proceeds from the exercise of stock
options of $10.3 million, partially offset by a payment of contingent
consideration for an acquisition of $5.0 million.
                    Contractual Obligations and Commitments
Our principal contractual commitments primarily consist of obligations under the
Notes (including principal and coupon interest), operating leases for office
space, and datacenter operations. For additional information of the Notes,
operating lease obligations, and hosting commitments, refer to Note 6, Note 7,
and Note 8 to our unaudited condensed consolidated financial statements included
elsewhere in this Quarterly Report on Form 10-Q.
Except for the Notes and datacenter operations, there has been no material
change in our other contractual obligations primarily related to IT operations,
sales and marketing activities, and acquisition related obligations in the
ordinary course of business since our fiscal year ended January 31, 2020. See
our Annual Report on Form 10-K filed with the SEC on March 12, 2020 for
additional information regarding our contractual obligations and commitments.
                         Off-Balance Sheet Arrangements

As of July 31, 2020, we did not have any relationships with unconsolidated entities or financial partnerships, such as structured finance or special purpose entities that were established for the purpose of facilitating off-balance sheet arrangements or other purposes.


                   Critical Accounting Policies and Estimates
Critical accounting policies and estimates are those accounting policies and
estimates that are both the most important to the portrayal of our net assets
and results of operations and require the most difficult, subjective or complex
judgments, often as a result of the need to make estimates about the effect of
matters that are inherently uncertain. These estimates are developed based on
historical experience and various other assumptions that we believe to be
reasonable under the circumstances. Critical accounting estimates are accounting
estimates where the nature of the estimates are material due to the levels of
subjectivity and judgment necessary to account for highly uncertain matters or
the susceptibility of such matters to change and the impact of the estimates on
financial condition or operating performance is material.
Our significant accounting policies are discussed in "Notes to Consolidated
Financial Statements - Note 1. Description of
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Business and Summary of Significant Accounting Policies" in our Annual Report on
Form 10-K filed with the SEC on March 12, 2020. There have been no material
changes to our critical accounting policies and estimates during the six months
ended July 31, 2020, except for the new accounting policy for the Notes issued
in April 2020.
Convertible Senior Notes
The Notes are accounted for in accordance with the Financial Accounting
Standards Board, or FASB, issued Accounting Standards Codification, or ASC,
Subtopic 470-20, Debt with Conversion and Other Options. Pursuant to ASC
Subtopic 470-20, issuers of certain convertible debt instruments, such as the
Notes, that have a net settlement feature and may be settled wholly or partially
in cash upon conversion are required to separately account for the liability
(debt) and equity (conversion option) components of the instrument. The carrying
amount of the liability component of the instrument is computed by estimating
the fair value of a similar liability without the conversion option using a
market-based approach. The amount of the equity component is then calculated by
deducting the fair value of the liability component from the principal amount of
the instrument. The difference between the principal amount and the liability
component represents a debt discount that is amortized to interest expense over
the respective terms of the Notes using an effective interest rate method. The
equity component is not remeasured as long as it continues to meet the
conditions for equity classification. In accounting for the issuance costs
related to the Notes, the allocation of issuance costs incurred between the
liability and equity components was based on their relative values.
                        Recent Accounting Pronouncements

See Note 1 of the notes to our condensed consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q for more information.


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