Explore the process of designing a hypermedia API in this 43-minute conference talk from PHP UK Conference 2013. Delve into the core concepts of hypermedia, including architectural styles, HTTP verbs, and resource identification. Learn about different types of hypermedia, link relations, and formatting options. Discover how to select appropriate media types, document your API effectively, and address challenges like caching and interoperability. Gain insights into advanced topics such as authentication, WebSockets, and updating APIs. Equip yourself with the knowledge to create self-explanatory, RESTful web services that leverage the power of hypermedia.