Strong Preliminary Second Quarter Results and Robust Second Half Business Pipeline - Increases Revenues and Adjusted EBITDA Guidance for 2021 - Seite 3

Non-GAAP measures

Adjusted Earnings Before Interest, Taxes, Depreciation and Amortization ("Adjusted EBITDA") is defined as operating income excluding stock-based compensation expenses, depreciation, restructuring costs, acquisition related items consisting of amortization of intangible assets and goodwill and intangible asset impairments, acquisition related expenses, gains and losses recognized on changes in the fair value of contingent consideration arrangements and certain accounting entries under the business combination accounting rules that require us to recognize a legal performance obligation related to revenues arrangements of an acquired entity based on its fair value at the date of acquisition. The purpose of such adjustments is to give an indication of our performance exclusive of non-cash charges and other items that are considered by management to be outside of our core operating results. These non-GAAP measures are among the primary factors management uses in planning for and forecasting future periods. Furthermore, the non-GAAP measures are regularly used internally to understand, manage and evaluate our business and make operating decisions, and we believe that they are useful to investors as a consistent and comparable measure of the ongoing performance of our business. However, our non-GAAP financial measures are not meant to be considered in isolation or as a substitute for comparable GAAP measures and should be read only in conjunction with our consolidated financial statements prepared in accordance with GAAP. Additionally, these non-GAAP financial measures may differ materially from the non-GAAP financial measures used by other companies. A reconciliation of guidance and of the preliminary results from a GAAP to Non-GAAP basis is not available due to the unpredictability and uncertainty associated with future events that would be reported in GAAP results and would require adjustments between GAAP and Non-GAAP financial measures. Accordingly, a reconciliation of the guidance and of the preliminary results based on Non-GAAP financial measures to corresponding GAAP financial measures for future periods, is not available without unreasonable effort.