Service definition revisited
The previous chapter provided a basic definition of what a service is. With the design principles provided in this chapter in mind, let's have a look at a formal definition of services according to The Open Group:
Note
The Open Group is a global consortium that enables the achievement of business objectives through IT standards. See: http://www3.opengroup.org/aboutus
A service:
- is a logical representation of a repeatable business activity that has a specified outcome (for example, check customer credit; provide weather data, consolidate drilling reports)
- is self-contained
- may be composed of other services
- is a black box to consumers of the service
Source: http://www.opengroup.org/soa/source-book/soa/soa.htm
This definition ...
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