The Company has provided in this release financial information that has not been prepared in accordance with Generally Accepted Accounting Principles (GAAP). Management uses these non-GAAP financial measures internally in analyzing the Company's financial results and believes they are useful to investors, as a supplement to GAAP measures, in evaluating the Company's ongoing operational performance. Management believes that the use of these non-GAAP financial measures provides an additional tool for investors to use in evaluating 8x8's ongoing operating results and trends and in comparing financial results with other companies in the industry, many of which present similar non-GAAP financial measures to investors.

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The Company has defined non-GAAP net income (loss) as net income (loss) for GAAP plus amortization of acquired intangible assets, impairment charges, stock-based compensation, other income and expenses, and the provision for or benefit from income taxes. Amortization of acquired intangible assets and impairment charges are excluded because they are a non-cash expense that management does not consider part of ongoing operations when assessing the Company's financial performance. Stock-based compensation expense has been excluded because it is a non-cash expense and relies on valuations based on future events, such as the market price of 8x8 common stock and attrition, that are difficult to predict and are affected by market factors that are largely not within the control of management. Certain other income and expense items, such as acquisition-related or severance expenses, have been excluded because management considers them to be isolated transactions and believes they are not reflective of the Company's ongoing operations, reduce comparability of periodic operating results when included, are difficult to predict, and are often one-time. GAAP tax provision (benefit) for income taxes has been excluded as it is also a non-cash expense that management does not consider part of its analysis of the performance of ongoing operations. Due to the Company's history of tax losses and full valuation allowance against deferred tax assets, future GAAP and Non-GAAP effective tax rates are limited to current taxes in certain US state and foreign jurisdictions. The Company reports these current taxes as reduction from Non-GAAP pretax net income to derive Non-GAAP net income after taxes. 

The Company defines non-GAAP net income per share as non-GAAP net income divided by the weighted-average diluted shares outstanding which includes the effect of potentially dilutive stock options and awards. The Company defines non-GAAP net income percentage of revenue as non-GAAP net income (loss) divided by non-GAAP revenue. Management believes that such exclusions facilitate comparisons to the Company's historical operating results and to the results of other companies in the same industry, and provides investors with information that management uses in evaluating the Company's performance on a quarterly and annual basis.

Although these non-GAAP financial measures adjust expense, they should not be viewed as a pro forma presentation reflecting the elimination of the underlying share-based compensation programs, which are an important element of the Company's compensation structure. GAAP requires that all forms of share-based payments should be valued and included, as appropriate, in results of operations. Management believes these expenses are a material part of the Company's operating results.

In addition:

• This release may provide certain financial measures that have been adjusted to exclude the impact of the discontinuation of the voice broadcasting segment of DXI, as first reported in the third quarter of the Company's 2017 fiscal year. To adjust for the discontinued voice broadcasting business, revenue figures for each period being compared exclude all revenue attributable to the discontinued business.

• This release may provide certain financial measures that have been adjusted to exclude all revenue generated by DXI in the revenue figures for each period being compared. As first reported in the third quarter of the Company's 2018 fiscal year, the Company has de-emphasized the sale of DXI's ContactNow as a stand-alone product, and management therefore believes it is useful to exclude this revenue from certain period-to-period comparisons in order to assess the growth of the Company's core business. Some financial measures presented in this release may reflect adjustments for comparison on a constant currency basis when management concluded that the elimination of the impact of currency fluctuations between current and comparative prior periods assist with the evaluation of the underlying business performance.

The Company discloses these non-GAAP financial measures to the public as an additional means by which investors can assess the Company's performance and to identify the Company's operating results for investors on the same basis applied by management. The non-GAAP financial measures disclosed by

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the Company should not be considered a substitute for, or superior to, financial measures calculated in accordance with GAAP, and the financial results calculated in accordance with GAAP and reconciliations to those financial statements should be carefully evaluated. The non-GAAP financial measures used by the Company may be calculated differently from, and therefore may not be comparable to, similarly titled measures used by other companies.

Non-GAAP financial measures should not be considered in isolation from, or as a substitute for, financial information prepared in accordance with GAAP. Investors are encouraged to review the reconciliation of these non-GAAP financial measures to their most directly comparable GAAP financial measures. This reconciliation has been provided in the financial statement tables included below in this press release.

This news release contains "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 include, without limitation, information about future events based on current expectations, potential product development efforts, near and long-term objectives, potential new business, strategies, organization changes, changing markets, future business performance and outlook. Such statements are predictions only, and actual events or results could differ materially from those made in any forward-looking statements due to a number of risks and uncertainties. Actual results and trends may differ materially from historical results or those projected in any such forward-looking statements depending on a variety of factors.

These factors include, but are not limited to:

• Customer acceptance and demand for our cloud communication and collaboration services,
• changes in the competitive dynamics of the markets in which we compete,
• the quality and reliability of our services,
• customer cancellations and rate of churn,
• our ability to scale our business,
• customer acquisition costs,
• our reliance on infrastructure of third-party network services providers,
• risk of failure in our physical infrastructure,
• risk of failure of our software,
• our ability to maintain the compatibility of our software with third-party applications and mobile platforms,
• continued compliance with industry standards and regulatory requirements in the United States and foreign countries in which we make our software solutions available, and the costs of such compliance,
• risks relating to our strategies and objectives for future operations, including the execution of integration plans and realization of the expected benefits of our acquisitions,
• the amount and timing of costs associated with recruiting, training and integrating new employees,
• timing and extent of improvements in operating results from increased spending in marketing, sales, and research and development,
• introduction and adoption of our cloud software solutions in markets outside of the United States,
• risk of cybersecurity breaches and other unauthorized disclosures of personal data,
• general economic conditions that could adversely affect our business and operating results,

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• implementation and effects of new accounting standards and policies in our reported financial results, and
• potential future intellectual property infringement claims and other litigation that could adversely affect our business and operating results.

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 Company's reports on Forms 10-K and 10-Q, as well as other reports that 8x8, Inc. files from time to time 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.

8x8, Inc.

Investor Relations:
Victoria Hyde-Dunn
1-669-333-5200

or

Media:
Priya Ramesh
1-669-235-3578
priya.ramesh@@8x8.com

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8x8, Inc.
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(In thousands, except per share amounts; unaudited)