RESTFul API is a way to build scalable web services based on the Representational State Transfer (REST) architectural style used for developing networked applications. A service based on REST is called a RESTFul service. The programming interface that a RESTFul service presents for other applications and services to use is called a RESTFul API. Almost all services built on RESTFul API use the HTTP or HTTPS protocol. RESTFul API services focus on resources and make it easy for these resources to be accessed from other applications in a secure, network efficient and scalable way. KEMP Loadmaster implements a feature complete RESTFul API.