Service-component architecture (SCA) is a group of specifications intended for the development of applications based on service-oriented architecture (SOA), which defines how computing entities interact to perform work for each other. Originally published in November 2005, SCA is based on the notion that all the functions in an enterprise should exist in the form of services that are combined into composites to address specific business requirements. SCA encompasses diverse technologies, programming languages, frameworks and platforms for Web service components and for the methods used to connect them. SCA can be broken down into four major parts or models:
