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