b 2 2017 REVIEW y the n017 umbe One of Zendesk’s biggest strengths has always been the broad appeal rs of our products across industries and organizations of every size. In 2017, 119,000 our prevalence grew to a point where we saw Zendesk increasingly at the Paid customer center of customer experiences worldwide. For example, over the four days accounts between Black Friday and Cyber Monday last November, our chat widget 2,000 reached more than 400 million visitors collectively across our customers’ Employees worldwide individual websites. 1.25 BILLION Throughout 2017, we saw solid improvement in growth opportunities and Support tickets solved operating fundamentals. Our mission to expand beyond customer service in 2017 640 to address customer journeys and relationships more broadly was a key Public apps on the investment theme that generated positive results. 150,000 App Marketplace On the product front, we focused on creating a more unified customer Public apps installed experience and simplifying the buying experience across our product family. to date As part of that process, we launched Chat Enterprise in August and Talk 20,000 Enterprise in September, and brought greater consistency in feature set and Customers with active scalability across all our products. Zendesk Support, Chat, Talk, and Guide web widgets can now be used together across a variety of use cases and degrees of 10,000 complexity to deliver improved customer experiences. Apps using a mobile SDK Zendesk Shareholder Letter Q4 2017 - 4

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