The REST API is a software application programming interface that helps an organization expose its data to external applications. The acronym "REST" stands for Representational State Transfer, which describes how external applications can access, modify, and share existing data on a network. A REST API is considered more lightweight than SOAP or GraphQL APIs because it typically only supports GET/POST operations over HTTP.
Related topics include API design, security, authentication methods, and documentation. Additional topics related to REST APIs include modern web development, mobile app development with Ionic Framework, and front-end frameworks like AngularJS.