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Cloud Computing and SOA Convergence in Your Enterprise: A Step-by-Step Guide by David S. Linthicum

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Chapter 6. Working from Your Services to the Clouds

Doing nothing is very hard to do . . . you never know when you’re finished.

—Leslie Nielsen

What is a service, and why do we care? Services denote behavior, or what is done by a service, such as

• Update customer

• Delete customer

• Calculate insurance risk

• Do a credit check

Services are not specific to cloud computing or to SOA, for that matter. They are a way to describe how we can access specific behaviors and data. Services are typically exposed out of an application and provide a way to access the value of the application, both behavior and data, using a well-defined interface.

We can think of services as collections of functional behaviors, each callable individually or as a group. ...

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