Services Layer

This layer is consists of multiple sub layers which encapsulate different class of services. It encompasses Connectivity Services, Data Services, Business Activity Services and Business Process Services. Each layer in turn consists of other sub-types of services.

This layer exposes different aspects of business - functional and infrastructural aspects. Connectivity and Data services are consist of Infrastructural services while Business Activity and Process services exposes functional Services.

These services though in layers but still breach layered architecture to expose these services independent of layers and for better performance. These services can also be exposed to multiple ESBs if situation warrants.