Subsystem analysis establishes traceability from business functional areas to the IT subsystems that support each such area. This process prepares for detailed
design by building understandings of the dependencies between the IT subsystems. Finally, you make initial
decisions regarding which detailed components will be involved in realizing each service in the service
model.
This task marks the beginning of the transition from service solution specification into service realization design --
that is, identification and design of the components that underpin the services. Prior to this point, you have
finished the service
model. Now, begin focusing on component-based design.
The steps of this task are not necessarily performed in sequence -- and, sometimes, they need to be performed in
concert with steps in other tasks. For example, it is likely that some dependencies between subsystems will
be discovered during the component specification task.
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