FileStack is a content delivery network (CDN) startup that provides an API and SDKs for developers to facilitate the transfer of content across a wide range of web and mobile platforms. FileStack allows developers to create, store, manage, and deliver content across platforms such as websites, mobile applications, and cloud storage services. The company offers users tools to customize size and type of file, replace image files, and manage content globally from a single location. FileStack also provides a scalable solution for content streaming, with its integrated technologies suggesting the best delivery format to optimize the user experience. Their network includes 260 points-of-presence (POPs) in more than 150 cities globally. FileStack is a part of Citrix, a global software development solutions provider, and its services are currently used by companies like Adobe, Atlassian, Microsoft, and Walmart.