expectations and assumptions. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks and changes in circumstances that may differ materially from those contemplated by the forward-looking statements, which are neither statements of historical fact nor guarantees or assurances of future performance. Important factors that could cause actual results to differ materially from those in the forward-looking statements are set forth in Duck Creek’s most recent Annual Report on Form 10-K that was filed with the Securities and Exchange Commission on November 3, 2020, as supplemented by Duck Creek’s subsequent public filings. In particular, the following factors, among others, could cause results to differ materially from those expressed or implied by such forward-looking statements: the impact of pandemics, including the on-going COVID-19 pandemic, on U.S. and global economies, Duck Creek’s business and results and financial condition, its employees, demand for its products, sales and implementation cycles, and the health of its customers’ and partners’ businesses; Duck Creek’s history of losses; changes in Duck Creek’s product revenue mix as it continues to focus on sales of its SaaS solutions, which will cause fluctuations in its results of operations and cash flows between periods; Duck Creek’s reliance on orders and renewals from a relatively small number of customers for a substantial portion of its revenue, and the substantial negotiating leverage customers have in renewing and expanding their contracts for Duck Creek’s solutions; the success of Duck Creek’s growth strategy focused on SaaS solutions and its ability to develop or sell its solutions into new markets or further penetrate existing markets; Duck Creek’s ability to manage its expanding operations; intense competition in Duck Creek’s market; third parties may assert Duck Creek is infringing or violating their intellectual property rights; U.S. and global market and economic conditions, particularly adverse in the insurance industry; additional complexity, burdens and volatility in connection with Duck Creek’s international sales and operations; the length and variability of Duck Creek’s sales and implementation cycles; data breaches, unauthorized access to customer data or other disruptions of Duck Creek’s solutions; the significant influence of Duck Creek’s largest shareholders on its management, business plans, and policies and any conflicts of interests therewith; and Duck Creek’s continued reliance on “controlled company” exemptions under the corporate governance standards of Nasdaq during the applicable phase-in periods.
Any forward-looking statement in this release speaks only as of the date of this release. Duck Creek undertakes no obligation to publicly update or review any forward-looking statement, whether as a result of new information, future developments or otherwise, except as may be required by any applicable laws.
Comparisons of results for current and any prior periods are not intended to express any future trends or indications of future performance unless expressed as such, and should only be viewed as historical data.
Non-GAAP Financial Measures and Other Metrics
This press release contains the following non-GAAP financial measures: non-GAAP gross margin, non-GAAP income from operations, adjusted EBITDA, non-GAAP net income, non-GAAP net income per share, and free cash flow. Adjusted EBITDA excludes provision for income taxes, other (income) expense, interest expense, net, depreciation of property and equipment, amortization of intangible assets, share-based compensation expense, and change in fair value of contingent earnout liability. Non-GAAP income from operations excludes share-based compensation expense, amortization of intangible assets, and change in fair value of contingent earnout liability. Non-GAAP gross margin excludes share-based compensation expense, amortization of intangible assets, and amortization of capitalized internal-use software. Non-GAAP net income excludes share-based compensation expense, amortization of intangible assets and change in fair value of contingent earnout liability and the tax effect of such adjustments. Free cash flow consists of net cash provided by operating activities less cash used for purchases of property and equipment and capitalized internal-use software. See below for a reconciliation of each non-GAAP financial measure to the most directly comparable GAAP financial measure.
Other metrics include SaaS ARR and SaaS Net Dollar Retention, which are calculated for all SaaS continuing software services, excluding the subscription revenue related to one legacy contract for a service no longer offered separately by Duck Creek. SaaS ARR is calculated by annualizing recurring revenue recorded in the last month of the measurement period. SaaS Net Dollar Retention is a rate calculated by annualizing recurring revenue recorded in the last month of the measurement period for those customers in place throughout the entire measurement period. We divide the result by annualized recurring revenue from the month that is one year prior to the end of the measurement period, for all customers in place at the beginning of the measurement period.
Duck Creek believes that these non-GAAP financial measures and other metrics provide useful information to management and investors regarding certain financial and business trends relating to Duck Creek’s financial condition and results of operations. Duck Creek’s management uses these non-GAAP financial measures and other metrics to manage its business, make planning decisions, evaluate its performance and allocate resources. Duck Creek believes that the use of these non-GAAP financial measures and other metrics help investors and analysts in comparing its results across reporting periods on a consistent basis by excluding items that Duck Creek does not believe are indicative of its core operating performance. These non-GAAP financial measures have limitations as analytical tools and should not be considered in isolation from, or as a substitute for, the analysis of other GAAP financial measures, including net income and cash flows from operating activities.
These non-GAAP financial measures are not universally consistent calculations, limiting their usefulness as comparative measures. Other companies may calculate similarly titled financial measures differently than Duck Creek does or may not calculate them at all. Additionally, these non-GAAP financial measures are not measurements of financial performance or liquidity under GAAP. In order to facilitate a clear understanding of its consolidated historical operating results, readers should examine Duck Creek’s non-GAAP financial measures in conjunction with its historical GAAP financial information.