How SOA and BPM fit together
To automate business processes, the challenge from the technical perspective converts to development of process applications, often referred to as composite applications. To be able to develop process/composite applications, that is, to compose business processes out of services, we need corresponding technologies.
SOA provides the technical architecture to develop end-to-end support for business processes. SOA achieves this objective by exposing an organization's IT assets as reusable business services that can be composed into processes on the one hand and can integrate and communicate more easily on the other hand.
SOA minimizes the semantic gap between process models and executable code. It achieves this objective ...