Nowadays RESTful Apis are powering the web and are used in almost every web application. In this workshop you will learn the fundamental principles of REST and how you can implement a RESTful APIs using Symfony. We will start with the basics of REST, continue with some more advanced topics like Serialization, Content-Negotiation and Security and eventually talk about Testing, Documentation and Versioning of APIs. Besides all the theory the attendees can deepen their learnings on every topic while doing the provided coding challenges.