Adapted from ‘The Innovators Dilemma’ by Clayton Christensen Complexity of Functionality demanded by the markets Advancement of functionality in old technology or model Advancement of functionality in new technology or model Window of Opportunity
A service-oriented architecture is a collection of services that are built following few principles:
Loose coupling of modules
Communication via well defined interfaces (services)
An Enterprise Services Architecture is the application of the service-oriented architecture principles to enterprise scale scenarios.
An Enterprise Service models business activities. It is an aggregation of Web Services to meet with the goal of automating enterprise-scale business scenarios. It typically accesses one or more enterprise information systems. Enterprise Services communicate using web service standards