Ciena : Investor Presentation - Fall 2021

Ciena Corporation

Fall 2021

Copyright © Ciena Corporation 2021. All rights reserved. Proprietary information.

Forward-looking statements and non-GAAP measures

Information in this presentation and related comments of presenters contain a number of forward-looking statements that involve risks and uncertainties. These statements are based on current expectations, forecasts, assumptions and other information available to the Company as of the date hereof. Forward-looking statements include Ciena's prospective financial results, return of capital plans, business strategies, expectations about its addressable markets and market share, and business outlook for future periods,

as well as statements regarding Ciena's expectations, beliefs, intentions or strategies regarding the future. Often, these can be identified by forward-looking words such as "target" "anticipate," "believe," "could," "estimate," "expect," "intend," "may," "should," "will," "plan," "predict," "potential," "project, "continue," and "would" or similar words.

Ciena's actual results, performance or events may differ materially from these forward-looking statements made or implied due to a number of risks and uncertainties relating to Ciena's business, including: economic, political and market conditions globally or regionally and their impact on us or our customers; the duration and severity of the COVID-19 pandemic and its impact on market conditions, economic activity, demand for our technology solutions, short- and long-term changes in customer or end user needs, continuity of supply chain, our business operations, liquidity and financial results; business conditions in the networking industry and customer changes in network spending or strategy; our ability to execute successfully our business and growth strategies; seasonality and the timing and size of customer orders, and our ability to recognize revenue relating to such sales; the level of competitive pressure we encounter; the product, customer and geographic mix of sales within the period; availability of key components and other supply chain disruptions and their impact on our business and financial results; changes in foreign currency exchange rates affecting revenue and operating expense; factors beyond our control such as natural disasters, acts of war or terrorism, and public health emergencies; adoption of or changes to laws or regulations impacting our business or industry; the impact of the Tax Cuts and Jobs Act and other changes in tax or trade regulations, including the imposition of tariffs, duties or changes in corporate tax rates; changes in estimates of prospective income tax rates and any adjustments to Ciena's provisional estimates whether related to new legislation, further guidance, analysis or otherwise; the impact of and the other risk factors disclosed in Ciena's periodic reports filed with the Securities and Exchange Commission (SEC) including Ciena's Annual Report on Form 10-K filed with the SEC on December 18, 2020 and Ciena's Quarterly Report on Form 10-Q for the third quarter of fiscal 2021 to be filed with the SEC.

All information, statements, and projections in this presentation and the related earnings call speak only as of the date of this presentation and related earnings call. Ciena assumes no obligation to update any forward-looking or other information included in this presentation or related earnings calls, whether as a result of new information, future events or otherwise.

In addition, this presentation includes historical, and may include prospective, non-GAAP measures of Ciena's gross margin, operating expense, operating profit, EBITDA, net income, and net income per share. These measures are not intended to be a substitute for financial information presented in accordance with GAAP. A reconciliation of non-

GAAP measures used in this presentation to Ciena's GAAP results for the relevant period can be found in the Appendix to this presentation. Additional information can also be

found in our press release filed this morning and in our reports on Forms 10-K and 10-Q filed with the Securities and Exchange Commission.

With respect to Ciena's expectations under "Business Outlook", Ciena is not able to provide a quantitative reconciliation of the adjusted (non-GAAP) gross margin, operating expense, operating margin and earnings per share guidance measures to the corresponding gross profit and gross profit percentage, and operating expense GAAP measures without unreasonable efforts. Ciena cannot provide meaningful estimates of the non-recurring charges and credits excluded from these non-GAAP measures due to the forward-looking nature of these estimates and their inherent variability and uncertainty. For the same reasons, Ciena is unable to address the probable significance of the unavailable information.

Copyright © Ciena Corporation 2021. All rights reserved. Proprietary information.

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COVID-19 response

Safety and community		Business continuity		Financial strength
• Prioritizing health of employees and		• Supply chain design and business	• We have a strong balance sheet and
following CDC guidance for employers		continuity planning has enabled us to	have demonstrated solid cash flow
		continue to support customers	generation over time

• The vast majority of our employees are

working remotely	• Significant IT investment in digital	• In light of our confidence around cash
	platforms and virtual collaboration	generation, we reinstated our share
• Instituted pandemic employee benefits	tools has enabled a seamless	repurchase plan starting in the first
	transition to remote working	quarter of 2021

• Enhanced our corporate charitable matching program for employee donations and volunteering

Result: Our employees have excelled through their continued focus, strength and kindness

Result: We are well positioned to manage through the current set of challenges presented by COVID-19

Result: Our financial strength provides long-term resiliency and differentiated flexibility to support our business

As COVID-19 challenges vary around the world, we remain vigilant and committed to our

customers and employees

Copyright © Ciena Corporation 2021. All rights reserved. Proprietary information.

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Our Pedigree

Copyright © Ciena Corporation 2021. All rights reserved. Proprietary information.

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Our portfolio

Enabling the Adaptive Network™

SOFTWARE CONTROL AND AUTOMATION

Blue Planet® multi-domainorchestration, federated inventory, and service order management solutions support the broadest range of closed-loop automation use cases across multi-layer,multi-vendor networks.

Ciena's Manage, Control and Plan (MCP) domain controller provides intelligent, data-drivensoftware-defined programmability to lifecycle operations of Ciena networks.

ANALYTICS AND INTELLIGENCE

Ciena and Blue Planet® Unified Assurance and Analytics: Open suite of software products that unifies multi-layer,multi-domain assurance, with AI-powered analytics to provide strategic insights to transform and simplify business, IT, and network operations.

MCP Advanced Apps: Applications designed to enhance operations and simplify user experience for optimization of multi-layer network performance, featuring Liquid Spectrum™ for increased optical network capacity and service availability, and Adaptive IP™ Apps for advanced real-time visualization and analysis of IP networks.

PROGRAMMABLE INFRASTRUCTURE

Converged Packet-OpticalNetworking: Software-programmable platforms, featuring Ciena's award-winning WaveLogic™ Photonics with optional agnostic packet/OTN switching, designed to maximize scale, flexibility, and open networking. Optimizes network performance across applications from metro to submarine, and is the dominant portfolio used globally for Data Center Interconnect.

Routing and Switching: Purpose-built routing, switching, and x86 VNF hosting platforms-using a common Service-Aware Operating System (SAOS)-provide the building blocks for low-touch,high-velocity IP, Segment Routing, Ethernet, MPLS, and 10G PON in access to metro networks.

Copyright © Ciena Corporation 2021. All rights reserved. Proprietary information.

CIENA SERVICES

A consultative approach to build, operate, and continually improve customers' networks to accelerate their unique journey to the Adaptive Network.

We bring experienced technical personnel, best practices, and processes-along with the most effective tools for handling network complexities to work alongside customers every step of the way.