Applications At Your Service.

Abstract

“Some things are always the same, particularly the business problems facing IT organizations. Corporate management always pushes for better IT utilization, greater ROI, integration of historically separate systems, and faster implementation of new systems; but some things are different now. .... Legacy systems must be reused rather than replaced, because with even more constrained budgets, replacement is costprohibitive. You find that cheap, ubiquitous access to the Internet has created the possibility of entirely new business models, which must at least be evaluated since the competition is already doing it. .... Systems must be developed where heterogeneity is fundamental to the environment, because they must accommodate endless variety of hardware, operating systems, middleware, languages, and data stores. .... Within a business environment, a pure architectural definition of a SOA might be something like an application architecture within which all functions are defined as independent services with well-defined invokable interfaces which can be called in defined sequences to form business processes.” – Migrating to a Service Oriented Architecture