Platform as a Service

In cloud computing diagrams, a platform as a service (PaaS) offering is often illustrated as being positioned between the SaaS layer above it and the IaaS layer below it. PaaS consists of a wide range of middleware services, such as application platforms, integration tools, business process management systems, and database services. Despite this, the PaaS concept is predominantly associated with application PaaS (aPaaS) and is therefore the focus of most of the attention surrounding the category.