Having a clear vision of what success looks like is important at the start of any programme or project. Starting with the end in mind allows you to set up key metrics to both manage output when you’re in the middle of delivering projects (ensuring that you are delivering against the business case) and also ensures that you know what results (outcomes) you expect to see once the change is delivered upon go live.
A key part of this is to have a benefits owner identified in the organisation who can monitor the realisation of the programme or project benefits against the original business case once the delivery mechanism is closed down and also ensure that the delivery has the end results in mind as it is executed.