2/24/2018 S-1 Table of Contents devices running Windows, Mac OS, iOS, Android, WindowsMobile, and Linux. We also have integrations with Microsoft, Adobe, Apple, Salesforce, Atlassian, Slack, IBM, Cisco, VMware, Okta, Symantec, Palo Alto Networks, and a variety of other productivity, collaboration, data management, and security vendors. We are dependent on the accessibility of our platform across these third­party operating systems and applications that we do not control. Several of our competitors own, develop, operate, or distribute operating systems, app stores, third­party datacenter services, and other software, and also have material business relationships with companies that own, develop, operate, or distribute operating systems, applications markets, third­ party datacenter services, and other software that our platform requires in order to operate. Moreover, some of these competitors have inherent advantages developing products and services that more tightly integrate with their software and hardware platforms or those of their business partners. Third­party services and products are constantly evolving, and we may not be able to modify our platform to assure its compatibility with that of other third parties following development changes. In addition, some of our competitors may be able to disrupt the operations or compatibility of our platform with their products or services, or exert strong business influence on our ability to, and terms on which we, operate and distribute our platform. For example, we currently offer products that directly compete with several large technology companies that we rely on to ensure the interoperability of our platform with their products or services. As our respective products evolve, we expect this level of competition to increase. Should any of our competitors modify their products or standards in a manner that degrades the functionality of our platform or gives preferential treatment to competitive products or services, whether to enhance their competitive position or for any other reason, the interoperability of our platform with these products could decrease and our business, results of operations, and financial condition could be harmed. We operate in competitive markets, and we must continue to compete effectively. The market for content collaboration platforms is competitive and rapidly changing. Certain features of our platform compete in the cloud storage market with products offered by Amazon, Apple, Google, and Microsoft, and in the content collaboration market with products offered by Atlassian, Google, and Microsoft. We compete with Box on a more limited basis in the cloud storage market for deployments by large enterprises. We also compete with smaller private companies that offer point solutions in the cloud storage market or the content collaboration market. We believe the principal competitive factors in our markets include the following: • user­centric design; • ease of adoption and use; • scale of user network; • features and platform experience; • performance; • brand; • security and privacy; • accessibility across several devices, operating systems, and applications; • third­party integration; • customer support; • continued innovation; and • pricing. With the introduction of new technologies and market entrants, we expect competition to intensify in the future. Many of our actual and potential competitors benefit from competitive advantages over us, such as greater 19 https://www.sec.gov/Archives/edgar/data/1467623/000119312518055809/d451946ds1.htm 26/235

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