Hi, just completing the formal validation testing, functional/UAT. #1 When the UAT report is completed and approved, is this considered the sign off from the business that the system is working to their expectation. #2 - Who performs cutover testing and what sort of testing is required in Prod. Is the user involved at this point and is this informal. Thank you 
cutover is the process of planning, managing and executing all of the tasks and activities that allows to replace the current legacy capabilities (process and technology) with the new capabilities (process and technology).