Platform as a Service, the abbreviation PaaS is used.
PaaS is a service when there are provided the complete resources for development and maintenance of custom applications available via the Internet (application platform). In this case, the customer has available complete development, debugging and application environment, in which it is possible to create and run own applications. Unlike the concept of SaaS, the ready-made applications are not available to rent. The customer must develop them himself. PaaS concept is the youngest of all categories of Cloud Computing and currently it is not very widespread.