#18x8 to Acquire Fuze December 1, 2021 The experience 8x8 Communications Platform Ⓒ8x8, Inc. Copyright and confidential.#2Forward-looking statements This presentation includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and Section 21E of the Securities Exchange Act of 1934. These statements relate to the release of new products, the total addressable market demand for products, changing industry trends and competition, business strategies, future operating performance and outlook, and the timing and ability to close our acquisition of Fuze and the impact it will have our financial results. These forward-looking statements are predictions only, and actual events or results may differ materially from such statements depending on a variety of factors. These factors include, but are not limited to: ● ● Customer adoption and demand for our products may be lower than we anticipate. Whether we are able to deliver the expected synergies of the Fuze acquisition, retain key customers and employees and successfully integrate Fuze into our business.. Impact of economic downturns on us and our customers, including from the COVID-19 pandemic. Competitive dynamics of the UCaaS, CCaaS, CPaaS, video and other markets in which we compete may change in ways we are not anticipating. Impact of supply chain disruptions; Third parties may assert ownership rights in our IP, which may limit or prevent our continued use of the core technologies behind our solutions. We may not achieve our target service revenue growth rate, or the revenue, earnings, bookings or other amounts we forecast in our guidance, for a particular quarter or for the full fiscal year of 2022. Our customer churn rate may be higher than we anticipate and we may not be able to successfully cross sell our existing customers or those we obtain through the Fuze acquisition. Our Investments we make in marketing, channel and value-added resellers (VARS), e-commerce, new products, may not result in revenue growth. For a discussion of such risks and uncertainties, which could cause actual results to differ from those contained in the forward-looking statements, see "Risk Factors" in the Forms 10-K and 10-Q filed by 8x8, Inc. with the Securities and Exchange Commission. All forward-looking statements are qualified in their entirety by this cautionary statement, and 8x8, Inc. undertakes no obligation to update publicly any forward-looking statement for any reason, except as required by law, even as new information becomes available or other events occur in the future. We have presented certain Fuze historical financial information in this presentation. These financial numbers have not been audited and have been prepared on a different basis than the company's financial statements and should not be viewed as a proxy for what those numbers would have been had they been prepared on the same basis as the company's financial statements. 8x8 See Appendix for Non-GAAP reconciliation and disclaimers. Ⓒ8x8, Inc. Copyright and confidential.#3Today's speakers 8x8 Dave Sipes 8x8 CEO Sam Wilson 8x8 CFO Ⓒ8x8, Inc. Copyright and confidential.#48x8 to acquire Fuze Combination to accelerate XCaaS innovation, expand enterprise customer base, and extend presence in continental Europe 8x8 Approximately $250 million in aggregate consideration, subject to certain adjustments, comprised of approximately $130 million in cash and $120 million in voting securities of 8x8. Expected to close in Q4 FY22 (calendar Q1), subject to customary regulatory approvals and closing requirements. Ⓒ8x8, Inc. Copyright and confidential.#5Strategic rationale With the acquisition of Fuze, we immediately increase our capacity to innovate and extend our XCaaS platform advantage. We also broaden our base of enterprise customers, increase the scale of our operations, and expand our global presence. I believe our common cloud communications DNA, complementary go-to-market strategies and enterprise-centric global approach to the market will enable a seamless transition to a unified organization. Dave Sipes, 8x8 CEO 8x8 Ⓒ8x8, Inc. Copyright and confidential.#6Key messages Strategic Accelerates XCaaS innovation Expands enterprise base $50M+ cross-sell opportunity European expansion Good fit / low integration risk Financial 8x8 Remain non-GAAP profitable. Reiterate long term model Ⓒ8x8, Inc. Copyright and confidential.#78x8 and Fuze Comparative Metrics 8x8 TTM Total Revenue¹ Annualized International Revenue² (as a % of total revenue) Annualized Investment in R&D (non-GAAP)³ Enterprise Customers4 Paid Business Users 8x8 $581M 31% ~$75M ~900 2M+ Fuze5 ~$130M ~30% ~$25M ~300 400K+ 1. Trailing 12 months as of 9/30/21. 2. Based on last quarter (ending 9/30/2021). 3. Based on last quarter (ending 9/30/2021) multiplied by 4. See Appendix for Non-GAAP Reconciliations. 4. Approximate. Enterprise is defined as customers that generate ARR >$100K. 5. As of December 1, 2021, the financial statements of Fuze as of and for the nine months ended September 30, 2021 have not been finalized, but are expected to be included in a Form 8-K following closing of the planned Merger. The basis of preparation for the interim financial statements is expected to be consistent with the audited financial statements as of and for the year ended December 31, 2020 which were furnished on Form 8-K dated December 1, 2021 by 8x8. The preliminary financial data included in these materials has been prepared by, and is the responsibility of, Fuze's management. PricewaterhouseCoopers LLP has not audited, reviewed, compiled, or applied agreed-upon procedures with respect to the preliminary financial data. Accordingly, PricewaterhouseCoopers LLP does not express an opinion or any other form of assurance with respect thereto. Ⓒ8x8, Inc. Copyright and confidential.#8Total addressable market for cloud communications by 2023 8x8 Source: IDC and 8x8 estimates. $75B+ UCaaS, CCaaS, and CPaaS $60B UCaaS and CCaaS $15B Differentiator: Integrated UCaaS and CCaaS Ⓒ8x8, Inc. Copyright and confidential.#9The importance of an integrated platform 87% of IT leaders say an integrated communications platform is the future of business communications.¹ 8x8 56% Lower TCO when calls, meetings, messaging, and contact center are integrated on a single cloud platform, compared to a multi-vendor strategy.² 1. 2021 survey of 400 IT decision makers conducted by Hanover Research 2. Metrigy's Report Real-World Benefits of Integrated Cloud Unified Communications and Collaboration Q1 | 21 Ⓒ8x8, Inc. Copyright and confidential.#108x8 strategic priorities X 8x8 Expanding Platform Advantage Integrated UCaaS & CCaaS 800 Winning Together With Partners Channel Partner Engagement K 7 ку Expanding the Base Upsell, Cross-sell, Retention Driving Operational Excellence Tailored GTM to Drive Scale and Efficiency Ⓒ8x8, Inc. Copyright and confidential.#11Expanding the platform advantage 8x8 4x Investment in Contact Center R&D* 650+ R&D Headcount 270+ Patents** Fuze acquisition *By end of fiscal 2023 from end of fiscal 2021, based on number of engineering teams based in these areas ** includes total patents awarded to date. 8x Investment in XCaaS Innovation* 900+ R&D Headcount 300+ Patents The information provided on this slide is forward-looking and based upon assumptions with respect to future decisions, which are subject to change. Actual results may vary and those variations may be material. For discussion of some of the important factors that could cause these variations, please consult the "Risk Factors" section in our most recently filed Form 10-K or 10-Q. Ⓒ8x8, Inc. Copyright and confidential.#128x8 Massive market opportunity M Differentiated product offerings Path to $1 billion + Operational rigor Multiple routes to market Ⓒ 8x8, Inc. Copyright and confidential.#13Financials Sam Wilson Chief Financial Officer 8x8 Ⓒ8x8, Inc. Copyright and confidential.