This document provides an overview of REST APIs and discusses why REST is commonly preferred over SOAP. It describes various REST API description languages (ADLs) like Swagger, RAML, and WADL and compares their support in Oracle products. It also provides examples of describing a sample Norwegian dataset API in RAML and implementing REST support in SOA Suite, including creating WADLs from other ADLs or using the REST adapter. The document concludes with discussing REST support in Java EE and Oracle PaaS products.