Platform-as-a-Service [PaaS]

A type of cloud computing service where the provider offers the customer the ability to operate custom code or applications. A PaaS operator determines which operating systems or execution environments are offered. A PaaS system does not allow the customer to change operating systems, patch the OS or alter the virtual network space. A PaaS system allows the customer to reduce hardware deployment in their own local facility and to take advantage of on-demand computing (also known as pay as you go).