You should read the following discussion and analysis of our financial
condition and results of operations together with the unaudited condensed
consolidated financial statements and related notes that are included elsewhere
in this Quarterly Report on Form 10-Q, and our Annual Report on Form 10-K filed
with the SEC on February 15, 2022. This discussion contains forward-looking
statements 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 those set forth under "Risk Factors" and elsewhere in this Quarterly
Report on Form 10-Q.

Overview

  Arista Networks pioneered data-driven, cognitive cloud networking for
large-scale data center and campus workspace environments. Our cloud networking
solutions consist of our Extensible Operating System ("EOS"), a set of network
applications and our Ethernet switching and routing platforms. We are a leader
in cloud networking solutions delivering high performance, scalability,
availability, programmability, workload orchestration, automation and
visibility. In recent years, we have sought to bring the operational consistency
and principles of cloud networking to the broader enterprise and campus markets
with our Cognitive Cloud Networking, extending EOS across the enterprise data
center and campus wired and wireless workspaces.

  We generate revenue primarily from sales of our switching and routing
platforms, which incorporate our EOS software, and related network applications.
We also generate revenue from post-contract support ("PCS"), which end customers
typically purchase in conjunction with our products, and renewals of PCS. We
sell our products through both our direct sales force and our channel partners.
As of December 31, 2021, we had delivered our cloud networking solutions to over
8,000 end customers worldwide. Our end customers span a range of industries and
include large internet companies, service providers, financial services
organizations, government agencies, media and entertainment companies, and
others.

  Historically, large purchases by a relatively limited number of end customers
have accounted for a significant portion of our revenue. We have experienced
unpredictability in the timing of orders from these large end customers
primarily due to changes in demand patterns specific to these customers, the
time it takes these end customers to evaluate, test, qualify and accept our
products, and the overall complexity of these large orders. We expect continued
variability in our customer concentration and timing of sales on a quarterly and
annual basis. For example, sales to our end customers Microsoft and Meta
Platforms in fiscal 2019 collectively represented 40% of our total revenue,
whereas sales to our end customer Microsoft in fiscal 2020 and 2021 amounted to
21.5% and 15.0% of our revenues, respectively, with our end customer Meta
Platforms representing less than 10% of our revenues in both fiscal 2020 and
2021. While we experienced some decline in overall revenue in 2020, the decline
in revenue from these large end customers in 2021 was more than offset by
stronger sales to our enterprise and other cloud and service provider customers.
In addition, we typically provide pricing discounts to large end customers,
which may result in lower margins for the period in which such sales occur. We
expect customer concentration with these large end customers to be cyclical and
linked to new product introductions and customer investment cycles.

  We believe that cloud computing represents a fundamental shift from
traditional legacy network architectures. As organizations of all sizes have
moved workloads to the cloud, spending on cloud and next-generation data centers
has increased rapidly, while traditional legacy IT spending has grown more
slowly. Our cloud networking platforms are well positioned to address the
growing cloud networking market, and to address increasing performance
requirements driven by the growing number of connected devices, as well as the
need for constant connectivity and access to data and applications.

  The markets for cloud networking solutions are highly competitive and
characterized by rapidly changing technology, changing end-customer needs,
evolving industry standards, frequent introductions of new products and
services, and industry consolidation. We expect competition to intensify in the
future as the market for cloud networking expands and existing competitors and
new market entrants introduce new products or enhance existing products. Our
future success is dependent upon our ability to continue to evolve and adapt to
our rapidly changing environment. We must also continue to develop
market-leading products and features that address the needs of our existing and
new customers, and increase sales in the enterprise data center switching, and
campus workspace markets. We intend to continue expanding our sales force and
marketing activities in key geographies, as well as our relationships with
channel, technology and system-level partners in order
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to reach new end customers more effectively, increase sales to existing
customers, and provide services and support. In addition, we intend to continue
to invest in our research and development organization to enhance the
functionality of our existing cloud networking platform, introduce new products
and features, and build upon our technology leadership. We believe one of our
greatest strengths lies in our ability to rapidly develop new features and
applications.

  Our development model is focused on the development of new products based on
our EOS software and enhancements to EOS. We engineer our products to be
agnostic with respect to the underlying merchant silicon architecture. The
programmability of EOS has allowed us to expand our software applications to
address the ever-increasing demands of cloud networking, including workflow
automation, network visibility, analytics and network detection and response,
and has further allowed us to integrate rapidly with a wide range of third-party
applications for virtualization, management, automation, orchestration and
network services. This enables us to focus our research and development
resources on our software core competencies and to leverage the investments made
by merchant silicon vendors to achieve cost-effective solutions. We work closely
with third-party contract manufacturers to manufacture our products. Our
contract manufacturers deliver our products to our third-party direct
fulfillment facilities. We and our fulfillment partners then perform labeling,
final configuration, quality assurance testing and shipment to our customers.

COVID-19 Update



  The global coronavirus ("COVID-19") pandemic and the subsequent recovery in
demand, coupled with lower COVID-19 period capital investments and reduced labor
supply has led to, among other things, manufacturing disruptions, supply chain
shortages, increased component and supply chain costs, increased lead times,
extended demand planning horizons and increased purchase commitments, all of
which have impacted our business operations.

  We continue to monitor and evaluate developments as the situation evolves, and
have prioritized the safety of our employees throughout this period. Our offices
across the globe have reopened with employees returning on a voluntary basis.
Our manufacturing and supply chain operations continue to experience significant
constraints, with component shortages, increased component and supply chain
costs and delays broadly impacting the industry as a whole. We continue to work
closely with our contract manufacturers and supply chain partners who have
experienced delays in component sourcing, workforce disruptions and governmental
restrictions on the production and export of their products. Although we have
worked diligently to drive improvements in these areas, including funding
additional working capital and incremental purchase commitments, these delays
have negatively impacted our ability to supply products to our customers on a
timely basis. We have extended our demand planning horizon, increased our
purchase commitments and expect to continue to invest in working capital to
address delays in component sourcing and the risk of future supply chain
disruptions, but we cannot be certain that such delays or disruptions will not
occur. In addition, inflation pressure in our supply chain and scarcity of some
materials needed to build our products have increased our cost of revenue and
may negatively impact our gross margin. Although the overall economy continues
to recover, several issues including inflation risk, supply chain bottlenecks
and COVID-19 variants have and may continue to impact the pace of the recovery.

  The extent of the impact of COVID-19 on our operational and financial
performance, including our ability to execute our business strategies and
initiatives in the expected time frame, will depend on future developments
including the duration and spread of the pandemic and related mitigation
efforts, and the impact on our customers, partners, employees, contract
manufacturers and supply chain, all of which are uncertain and cannot be
predicted. However, any continued or renewed disruption in manufacturing and
supply resulting from the COVID-19 pandemic or related containment measures
could negatively impact our business. We also believe that any extended or
renewed COVID-19 related economic disruption could have a negative impact on
demand from our customers in future periods. Accordingly, current results and
financial condition discussed herein may not be indicative of future operating
results and trends.
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Results of Operations

Three Months Ended March 31, 2022 Compared to Three Months Ended March 31, 2021



Revenue, Cost of Revenue and Gross Margin (in thousands, except percentages)

                                                    Three Months Ended March 31,
                                          2022            2021               Change in
                                           $               $               $             %
           Revenue
           Product                    $ 724,718       $ 539,145       $ 185,573        34.4  %
           Service                      152,348         128,417          23,931        18.6
           Total revenue                877,066         667,562         209,504        31.4
           Cost of revenue
           Product                      293,809         218,433          75,376        34.5
           Service                       29,412          23,857           5,555        23.3
           Total cost of revenue        323,221         242,290          80,931        33.4
           Gross profit               $ 553,845       $ 425,272       $ 128,573        30.2  %
           Gross margin                    63.1  %         63.7  %


Revenue by Geography (in thousands, except percentages)



                                                         Three Months Ended March 31,
                                             2022              % of Total        2021         % of Total
 Americas                            $     664,377                75.7   %    $ 501,872          75.2   %
 Europe, Middle East and Africa            134,805                15.4           96,274          14.4
 Asia-Pacific                               77,884                 8.9           69,416          10.4
 Total revenue                       $     877,066               100.0   %    $ 667,562         100.0   %


Revenue

  Product revenue primarily consists of sales of our switching and routing
products, and software licenses. Service revenue is primarily derived from sales
of PCS contracts, which is typically purchased in conjunction with our products,
and subsequent renewals of those contracts. We expect our revenue may vary from
period to period based on, among other things, the timing, size, and complexity
of orders, especially with respect to our large end customers.

  Product revenue increased $185.6 million, or 34.4%, for the three months ended
March 31, 2022 compared to the same period in 2021. The increase was primarily
driven by increased demand for our switching and routing products from our
existing customers, with strong contributions from across our customer base. In
addition, we added new customers in the period, as we continued to expand our
presence in the enterprise market. Service revenue increased $23.9 million, or
18.6%, in the three months ended March 31, 2022, compared to the same period in
2021, as a result of continued growth in initial and renewal PCS contracts as
our customer installed base has continued to expand. International revenues
decreased slightly from 24.8% of total revenue in the three months ended March
31, 2021 to 24.3% of total revenues in the three months ended March 31, 2022,
which was primarily due to reduced purchases from large global customers in the
Asia-Pacific region. We continued to experience competitive pricing pressure on
our products and services.

Cost of Revenue and Gross Margin



  Cost of product revenue primarily consists of amounts paid for inventory to
our third-party contract manufacturers and merchant silicon vendors, overhead
costs of our manufacturing operations including freight, and other costs
associated with manufacturing our products and managing our inventory and supply
chain. Cost of service revenue primarily consists of personnel and other costs
associated with our global customer support and services organizations.

  Cost of revenue increased $80.9 million, or 33.4% for the three months ended
March 31, 2022 compared to the same period in 2021, which was primarily driven
by a corresponding increase in product and service revenues, coupled with an
increase in supply chain costs due to increased production capacity, component
and other supply chain costs and higher volumes.

Gross margin, or gross profit as a percentage of revenue, has been and will continue to be affected by a variety of


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factors, including pricing pressure on our products and services due to
competition, the mix of sales to large end customers who generally receive lower
pricing, the mix of products sold, manufacturing-related costs, including costs
associated with supply chain sourcing activities, merchant silicon costs, and
excess/obsolete inventory write-downs, including charges for excess/obsolete
component inventory held by our contract manufacturers. We expect our gross
margin to fluctuate over time, depending on the factors described above.

  Gross margin decreased from 63.7% to 63.1% for the three months ended
March 31, 2022 compared to the same period in 2021. The decrease was primarily
driven by higher supply chain costs, which were partly offset by improved
product margins due to a reduced proportion of our sales to larger end customers
who generally receive larger discounts.

Operating Expenses (in thousands, except percentages)



  Our operating expenses consist of research and development, sales and
marketing, and general and administrative expenses. The largest component of our
operating expenses is personnel costs. Personnel costs consist of wages,
benefits, bonuses and, with respect to sales and marketing expenses, sales
commissions. Personnel costs also include stock-based compensation and travel
expenses.

                                                        Three Months Ended March 31,
                                               2022           2021               Change in
                                                $               $             $             %
         Operating expenses:
         Research and development          $  172,006      $ 132,487      $ 39,519        29.8  %
         Sales and marketing                   80,739         71,020         9,719        13.7
           General and administrative          23,113         15,473         7,640        49.4

         Total operating expenses          $  275,858      $ 218,980      $ 56,878        26.0  %


Research and development

  Research and development expenses consist primarily of personnel costs,
prototype expenses, third-party engineering costs, and an allocated portion of
facility and IT costs. Our research and development efforts are focused on new
product development and maintaining and developing additional functionality for
our existing products, including new releases and upgrades to our EOS software
and applications. We expect our research and development expenses to increase in
absolute dollars as we continue to invest in software development in order to
expand the capabilities of our cloud networking platform, introduce new products
and features, and continue to invest in our technology.

  Research and development expenses increased $39.5 million, or 29.8%, in the
three months ended March 31, 2022 compared to the same period in 2021. The
increase in the three months ended March 31, 2022 was primarily due to a $21.4
million increase in new product introduction costs, including third party
engineering and other product development costs, and an $8.9 million increase in
personnel costs driven by headcount growth.

Sales and marketing



  Sales and marketing expenses consist primarily of personnel costs, marketing,
trade shows, and other promotional activities, and an allocated portion of
facility and IT costs. We expect our sales and marketing expenses to increase in
absolute dollars as we continue to expand our sales and marketing efforts
worldwide.

  Sales and marketing expenses increased $9.7 million, or 13.7%, for the three
months ended March 31, 2022 compared to the same period in 2021. The increase in
the three months ended March 31, 2022 included $11.0 million in
personnel-related costs mostly driven by an increase in headcount and sales
incentive compensation.

General and administrative



  General and administrative expenses consist primarily of personnel costs and
professional services costs. General and administrative personnel costs include
those for certain executive functions, as well as finance, human resources and
legal functions. Our professional services costs are primarily related to
external legal, accounting and tax services.

  General and administrative expenses increased $7.6 million, or 49.4%, in the
three months ended March 31, 2022 compared to the same period in 2021. The
increase for the three months ended March 31, 2022 was primarily related to $5.3
million in personnel-related costs, which primarily consisted of increased
stock-based compensation expenses.

Other Income, Net (in thousands, except percentages)



  Other income, net consists primarily of interest income from our cash, cash
equivalents and marketable securities, gains and losses on our equity
investments in privately-held companies and marketable securities, and foreign
currency
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transaction gains and losses. We expect other income, net may fluctuate in the
future as a result of the re-measurement of our equity investments upon the
occurrence of observable price changes and/or impairments, changes in interest
rates or returns on our cash and cash equivalents and marketable securities, and
foreign currency exchange rate fluctuations.

                                                            Three Months Ended March 31,
                                                   2022             2021               Change in
                                                     $                $            $              %
  Other income, net:
  Interest income                            $     2,428          $ 2,045      $    383          18.7  %
  Unrealized gain on equity investments           28,497                -        28,497         100.0
  Other income (expense), net                        555             (470)        1,025         218.1
  Total other income, net                    $    31,480          $ 1,575      $ 29,905       1,898.7  %


  The increase in other income, net was driven by a $28.5 million unrealized
gain on our equity investments. For additional information, refer to Note 2 -
Fair Value Measurement and Investments in the notes to the condensed
consolidated financial statements included in Part I, Item 1, of this Quarterly
Report on Form 10-Q.

Provision for Income Taxes (in thousands, except percentages)



  We operate in a number of tax jurisdictions and are subject to taxes in each
country or jurisdiction in which we conduct business. Earnings from our non-U.S.
activities are subject to local country income tax and may also be subject to
U.S. income tax. Generally, our U.S. tax obligations are reduced by a credit for
foreign income taxes paid on these foreign earnings, which avoids double
taxation. Our tax expense to date consists of federal, state and foreign current
and deferred income taxes.

                                                       Three Months Ended March 31,
                                             2022            2021               Change in
                                              $               $               $             %
         Income before income taxes      $ 309,467       $ 207,867       $ 101,600        48.9  %
         Provision for income taxes         37,208          27,501           9,707        35.3  %
         Effective tax rate                   12.0  %         13.2  %


  For the three months ended March 31, 2022 and 2021, we recorded a provision of
$37.2 million and $27.5 million for income taxes, respectively. The increase in
income taxes was primarily due to an overall increase in pre-tax income,
combined with a favorable change in jurisdictional mix in earnings in the three
months ended March 31, 2022, as compared to the same period in 2021.

Liquidity and Capital Resources



  Our principal sources of liquidity are cash, cash equivalents, marketable
securities, and cash generated from operations. As of March 31, 2022, our total
balance of cash, cash equivalents and marketable securities was approximately
$3.4 billion, of which approximately $600.1 million was held outside of the U.S.
in our foreign subsidiaries.

  Our cash, cash equivalents and marketable securities are held for general
business purpose including the funding of working capital. Our marketable
securities investment portfolio is primarily invested in highly-rated
securities, with the primary objective of minimizing the potential risk of
principal loss. We plan to continue to invest for long-term growth. We believe
that our existing balances of cash, cash equivalents and marketable securities,
together with cash generated from operations, will be sufficient to meet our
working capital requirements and our growth strategies for at least the next 12
months. Our future capital requirements will depend on many factors, including
our growth rate, the timing and extent of our spending to support research and
development activities, the timing and cost of establishing additional sales and
marketing capabilities, the introduction of new and enhanced product and service
offerings, our costs associated with supply chain activities, including access
to outsourced manufacturing, our costs related to investing in or acquiring
complementary or strategic businesses and technologies, the continued market
acceptance of our products, and stock repurchases. If we require or elect to
seek additional capital through debt or equity financing in the future, we may
not be able to raise capital on terms acceptable to us or at all. If we are
required and unable to raise additional capital when desired, our business,
operating results and financial condition may be adversely affected.
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