2/24/2018 S-1 Table of Contents of Fortune 500 companies had at least one Dropbox Business team within their organization. Our customer base is highly diversified, and in 2015, 2016, and 2017, no customer accounted for more than 1% of our revenue. Our customers include individuals, teams, and organizations of all sizes, from freelancers and small businesses to Fortune 100 companies. They work across a wide range of industries, including professional services, technology, media, education, industrials, consumer and retail, and financial services. Within companies, our platform is used by all types of teams and functions, including sales, marketing, product, design, engineering, finance, legal, and human resources. How we support our customers All of our users can access support through the following resources: • Help center: Provides an online repository of helpful information about our platform, responses to frequently asked questions, and best practices for use. • Community support: Facilitates collaboration between users on answers, solutions, and ideas about our platform in an online community. • Twitter support: Provides users real­time product and service updates, and offers tips and troubleshooting information. • Guided troubleshooting: Offers step­by­step instructions to resolve common questions and provides a portal to submit help requests for questions that aren’t otherwise available. We also offer additional support for our paying users as described above in “Our Subscription Plans.” Case Studies The customer examples below illustrate how businesses from different industries benefit from our platform. 107 https://www.sec.gov/Archives/edgar/data/1467623/000119312518055809/d451946ds1.htm 115/235