However, if you think that a Service is just an API, then all hell breaks loose when you try to connect a Service Consumer directly to a Service Provider.
This pattern breaks a file down into records and USES each record to make a service call, or pass a message to one or more systems with a transactional interface.
The ITIL guide breaks down the key principles of the IT service management discipline into the following sub-categories, which are collectively known as the ITIL framework (see Figure 1).