Our product family enables large companies to transform their customer In addition, we announced the appointment of Norman Gennaro as senior experiences. In 2018, we are focused on building out even more vice president of worldwide sales in December. Norman brings more than sophisticated product capabilities that our largest customers will expect as 25 years of business and technology experience leading and growing they adapt to these new trends. global teams of sales professionals. Most recently, he helped to build the To help guide our teams as we continue to move upmarket, we put an mid-market segment for North America into a multibillion-dollar business emphasis in the second half of 2017 on filling key roles with leaders for Amazon Web Services, and prior to that, he spent 16 years in enterprise who have experience working with larger companies. Two of these key sales with Oracle. Norman will partner with Jeff Titterton, who joined us as additions were for our board of directors—most recently, the appointment senior vice president of marketing earlier in 2017. of Mike Frandsen in November. Mike brings more than three decades of Our new sales and marketing leadership is building experienced teams that valuable enterprise product development experience with companies like can meet the demands of our growing global business. These two teams are DemandTec and PeopleSoft. He is currently executive director of products working in concert on our many go-to-market activities worldwide, including at Workday. customer and prospect events. Our new 2018 events strategy includes more than ten major Zendesk-produced events in our most significant regions around the globe. These events are designed to help generate and accelerate our pipeline of new and expansion business with their focus on Zendesk products and customer experience best practices. In 2018, we plan to expand our investments globally to build a broader partner and channel ecosystem to support our upmarket activities. While we continue to pride ourselves on our products’ ease of use and implementation, we also recognize that our largest enterprise customers frequently require the expertise of systems integrators and partners. Our regional partnerships demonstrated the potential value and impact of such alliances, and we expect to expand the number and scope of these partnerships over this year. Mike Frandsen, Board Member Our largest customers value our ability to scale with them to serve their growing demands. To that end, Zendesk continues to make reliability and scalability top priorities. Our customers view Zendesk as a critical piece Mike joins Hilarie Koplow-McAdams, who was appointed to the board in of their businesses and rely on Zendesk products to achieve successful September. Hilarie brings deep global enterprise software sales expertise to outcomes. In 2017, we began to migrate our data center investments to cloud Zendesk, having formerly held executive leadership positions at New Relic, infrastructure to enable greater reliability, flexibility, and scale. In early 2018, Salesforce, Intuit, and Oracle. Mike and Hilarie will be key product and sales we will finalize our transition plans to cloud infrastructure and develop a plan resources for us as we move upmarket toward our $1 billion revenue goal. for customer migration, which is likely to take several quarters. Zendesk Shareholder Letter Q4 2017 - 6

Shareholder Letter - Page 6 Shareholder Letter Page 5 Page 7