Part of the Software Development Life Cycle (SDLC): after the system has been tested during the Testing Phase, and accepted by the user, the system is installed and made operational in a production environment, in accordance with the requirements.

A White and Black Box tested application installed in a production environment.

Other deliverables that can be started at this point (depending on the size/scope of the project):

• Post-Implementation Review
• Change Implementation Notice
• Version Description Document

See: Waterfall Method Deliverables.