PaaS — Platform-as-a-Service

What is Platform as a Service (PaaS)?

Platform as a Service (PaaS) is a concept that describes a computing platform that is subscribed to as an integrated solution, or a specific solution stack capability through an Internet connection.

The solution stack may be a set of components or software subsystems used to develop a fully functional product or service, such as a web application that uses an OS, web server, database and programming language. More generically, the solution stack may deliver an OS, middleware, database or application.

PaaS evolved from the Infrastructure as a Service (IaaS) model, which uses the Internet to deliver computer infrastructure resources. The PaaS service delivery model allows a customer to rent virtualized servers and associated services used to run existing applications, or to design, develop, test, deploy and host applications.

PaaS offerings often include a variety of services and service combinations spanning the application development lifecycle. Typical service features include source code control and tracking, versioning, testing and build process management tools.