Before revision: the project preparation where a vision of the future-state of the SAP solution is being created, a sizing and blueprinting phase where the solution stack is created and training is being performed, a functional development phase and finally a final preparation phase, when the last tests are being performed before the actual go live.
After revision: the project preparation where a vision of the future-state of the SAP solution is being created, a sizing and blueprinting phase where a software stack is acquired and training is being performed, a functional development phase and finally a final preparation phase, when the last tests are being performed before the actual go live.