Playbacks are essential to ensure that:
Playback sessions take the form of intensive workshops involving the Delivery and Vendor teams - they can be feisty sessions.
Intensive testing phase to understand whether the solution can be accepted.
If UAT fails in any substantial way then the solution cannot be accepted and any go-live date must be pushed back.
Process or function-driven training for end users, often delivered by the workstream leads rather than the vendor.
Even though it is a pre go-live activity, User Training is the first stage of the organization rollout of the new solution.
Migrating the bulk of existing data into the new system prior to the go-live cutover.
Data migration can be error-prone and easily lead to project delays if not not planned effectively.