•	Growth in annualized recurring revenue on a year-over-year basis

•	Growth in operating margin on a year-over-year basis

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•	Non-GAAP revenue

•	Non-GAAP recurring revenue

•	Non-GAAP operating income

•	Non-GAAP operating margin

•	Non-GAAP net income

•	Non-GAAP diluted earnings per share

•	Non-GAAP tax rate

•	Adjusted EBITDA

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(A)

Acquired deferred revenue adjustment. Purchase accounting generally requires us to write-down acquired deferred revenue to fair value. Our GAAP revenue includes the fair value impact from purchase accounting for post-contract support and subscriptions contracts assumed in connection with our acquisitions. The non-GAAP adjustment to our revenue is intended to reflect the full amount of such revenue.  We believe this adjustment is useful to investors as a measure of the ongoing performance of our business and facilitates analysis of revenue growth and business trends.

(B)	Restructuring charges. Included in our GAAP presentation of cost of sales and operating expenses, restructuring charges recorded are primarily for employee compensation resulting from reductions in employee headcount in connection with our company restructurings. We exclude restructuring charges from our non-GAAP measures because

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(C)

COVID-19 expenses. Included in our GAAP presentation of operating expenses, COVID-19 expenses consist of costs incurred as a direct impact from the COVID-19 virus pandemic, such as cancellation fees of trade shows due to public safety issues, additional costs for disinfecting facilities, personal protective equipment, and labor. We exclude COVID-19 expenses from our non-GAAP measures because we believe they are one-time costs that vary significantly in amount and timing and are not indicative of our core operating performance.

(D)

Amortization of purchased intangible assets. Included in our GAAP presentation of gross margin and operating expenses is amortization of purchased intangible assets. U.S. GAAP accounting requires that intangible assets are recorded at fair value and amortized over their useful lives. Consequently, the timing and size of our acquisitions will cause our operating results to vary from period to period, making a comparison to past performance difficult for investors. This accounting treatment may cause differences when comparing our results to companies that grow internally because the fair value assigned to the intangible assets acquired through acquisition may significantly exceed the equivalent expenses that a company may incur for similar efforts when performed internally. Furthermore, the useful life that we use to amortize our intangible assets over may be substantially different from the time period that an internal growth company incurs and recognizes such expenses. We believe that by excluding the amortization of purchased intangible assets, which primarily represents technology and/or customer relationships already developed, this provides an alternative way for investors to compare our operations pre-acquisition to those post-acquisition and to those of our competitors that have pursued internal growth strategies. However, we note that companies that grow internally will incur costs to develop intangible assets that will be expensed in the period incurred, which may make a direct comparison more difficult.

(E)

Stock-based compensation and deferred compensation. Included in our GAAP presentation of cost of sales and operating expenses are stock-based compensation consists of expenses for employee stock options and awards and purchase rights under our employee stock purchase plan. Additionally included in our GAAP presentation of cost of sales and operating expenses are income or expense associated with movement in our non-qualified deferred compensation plan liabilities. Changes in non-qualified deferred compensation plan assets, included in non-operating expense, net, offset the income or expense in the plan liabilities. We exclude them from our non-GAAP measures because some investors may view it as not reflective of our core operating performance as they are a non-cash item.

(F)

Acquisition / divestiture items. Included in our GAAP presentation of cost of sales and operating expenses, acquisition costs consist of external and incremental costs resulting directly from merger and acquisition and strategic investment activities such as legal, due diligence, integration, and other closing costs including the acceleration of acquisition stock options and adjustments to the fair value of earn-out liabilities. Included in our GAAP presentation of non-operating expense, net, acquisition/divestiture items includes unusual acquisition, investment, and/or divestiture gains/losses. Although we do numerous acquisitions, the costs that have been excluded from the non-GAAP measures are costs specific to particular acquisitions. These are one-time costs that vary significantly in amount and timing and are not indicative of our core operating performance.

(G)

Amortization of acquired capitalized commissions. Purchase accounting generally requires us to eliminate capitalized sales commissions balances as of the acquisition date. Our GAAP sales and marketing expenses generally do not reflect the amortization of these capitalized sales commissions balances. The non-GAAP adjustment to increase our sales and marketing expenses is intended to reflect the full amount of amortization related to such balances as though the acquired companies operated independently in the periods presented.  We believe this adjustment to sales and marketing expenses is useful to investors as a measure of the ongoing performance of our business.

(H)	Non-GAAP items tax effected. This amount adjusts the provision for income taxes to reflect the effect of the non-GAAP items (A) - (G) on non-GAAP net income. We believe this information is useful to investors because it provides for consistent treatment of the excluded items in this non-GAAP presentation.

(I)

Difference in GAAP and Non-GAAP tax rate. This amount represents the difference between the GAAP and Non-GAAP tax rates applied to the Non-GAAP operating income plus the Non-GAAP non-operating expense, net. The non-GAAP tax rate excludes net deferred tax impacts resulting from a non-U.S. intercompany transfer of intellectual property. We believe that investors benefit from excluding this amount from our non-GAAP income tax provision because it facilitates a comparison of the non-GAAP tax provision in the current and prior periods.

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(J)	GAAP and non-GAAP tax rate percentages. These percentages are defined as GAAP income tax provision as a percentage of GAAP income before taxes and non-GAAP income tax provision as a percentage of non-GAAP income before taxes. We believe that investors benefit from a presentation of non-GAAP tax rate percentage as a way of facilitating a comparison to non-GAAP tax rates in prior periods.