EDSOA is an extension of SOA to capture the requirements of event-driven dynamic business process and to achieve event-driven dynamic composition of a business process.

We focus on dynamic nature of business process and propose event-driven service-oriented architecture (EDSOA) as a solution. ESSOA is based on the convergence of Web services, Semantic web, and grid computing. Web Services (WS) fulfills the functionality of a business process by integrating distributed heterogeneous services. Dynamic nature of a business process is modeled by capturing events using event calculus and composition schema is generated dynamically by using Event-Condition-Action (ECA) rules. Semantic web provides required support for common vocabulary, interoperability, and automation. Grid provides middleware support for execution of a business process with state, transaction, notification, and life-cycle management of a process.