The system is to include or make use of an already existing system.
Characteristics: Common. Basic solution.
Keywords: Embedding existing system, existing system, incorporating existing system, old system, using existing system.
This blueprint captures the situation where the system includes a legacy system as a part of it, which implies that the legacy system is not structurally visible in the use-case model. However, it appears in the description of the use cases.
This blueprint is preferred when there should be no explicit interaction with the legacy system ...