SOA Fundamentals

This article introduces the basic principles of Service Oriented Architecture and has many links to useful resources on the web that will give the reader a good start in this exciting area. For those wanting to learn in more depth then see my book recommendations at the end of the article.

Introduction
Enterprises are made up of a set of Business Processes. That is what makes a company tick, it's the day to day, week to week, year to year stuff that the corporation does to make a profit - provide a service, make something, sell something, receive money, issue invoices, bank money, pay staff and so on. Most of these processes can be broken down into more fundamental discrete building blocks known as services. SOA dictates that all services that can be automated be built in such a way that no calling client needs to worry about how it is implemented - the service is truly an abstract black box with a formal contract of engagement , the services can easily be reused and assembled into Business processes and the relationship between services and clients is one of limited dependency.

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William Hoffman
http://www.mainframe-upgrade.com/