2/24/2018 S-1 Table of Contents Our Users We’re constantly inspired by the diverse ways people use Dropbox to bring their ideas to life and achieve their missions faster. Here are just a few examples: • Nobel Prize­winning researchers sync data with collaborators to speed development of new scientific breakthroughs. • Designers for a sustainable apparel company iterate on new designs and coordinate store openings. • A commercial construction company shares blueprints with subcontractors on job sites and sends bids to prospective clients. • A Fortune 500 online travel company keeps its global workforce connected with business partners around the world. • Pro bono lawyers at a refugee assistance organization collect and share information across continents to save lives. What Sets Us Apart Since the beginning, we’ve focused on simplifying the lives of our users. In a world where business software can be frustrating to use, challenging to integrate, and expensive to sell, we take a different approach. Simple and intuitive design While traditional tools developed in the desktop age have struggled to keep up with evolving user demands, Dropbox was designed for the cloud era. We build simple, beautiful products that bring joy to our users and make it easier for them to do their best work. Unencumbered by legacy features, we can perfect the aspects of our platform that matter most today, such as the mobile experience and the ability to work in teams. Open ecosystem We know people will continue to use a wide variety of tools and platforms. That’s why we’ve built Dropbox to work seamlessly with other products, integrating with partners from Google and Microsoft to Slack and Autodesk. More than 75% of Dropbox Business teams have linked to one or more third­party applications. Viral, bottom­up adoption Our 500 million registered users are our best salespeople. They’ve spread Dropbox to their friends and brought us into their offices. Every year, millions of individual users sign up for Dropbox at work. Bottom­up adoption within organizations has been critical to our success as users increasingly choose their own tools at work. We generate over 90% of our revenue from self­serve channels—users who purchase a subscription through our app or website. Performance and security Our custom­built infrastructure allows us to maintain high standards of performance, availability, and security. Dropbox is built on proprietary, block­level sync technology to achieve industry­leading performance. In 2016, IDC highlighted our sync performance as best­in­class, outperforming competitors on multiple sync tests, including upload and download speeds for large files. We designed our platform with multiple layers of redundancy to guard against data loss and deliver high availability. We also offer numerous layers of protection, from secure file data transfer and encryption to network configuration and application­level controls. 2 https://www.sec.gov/Archives/edgar/data/1467623/000119312518055809/d451946ds1.htm 9/235