Chapter 14. Application

Any program is only as good as it is useful.

—Linus Torvalds

A domain model often lives at the heart of an application. The application may have a user interface that presents concepts of the domain model and allows the user to perform various actions on the model. The user interface will make use of application-level services that coordinate use case tasks, manage transactions, and assert necessary security authorizations. Further, the user interface, Application Services, and domain model will rely on enterprise platform-specific infrastructural support. The infrastructure implementation details will generally include the facilities of a component container, application management, messaging, and database.

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