Within this phase the solution is transferred to the business for further testing and implementation into live operation.

This phase contains three main areas of work:

• Further testing of the solution in the form of user acceptance testing (UAT) and operational acceptance testing (OAT), to prove that the solution will work in real business situations and that it is robust, with suitable support processes in place.
• Transitional activities to prepare the business and technology for going live, such as populating the new organisation structure, training, setting up infrastructure or hardware and software installations.
• Going live – actually switching to the new ways of working.