There is no whole system within interconnection of its parts and there is no whole system without its environment
— Francisco Varla
Without knowing something about the Capabilities are needed by the customers to fulfill their business needs, a credible plan for when you're going to be able to produce those capabilities the customer is willing to paying for those Capabilities at that time, your project has little chance of being a financial success before you run out of time and money.
This is called Capabilities Based Planning and here's another approach Capabilities Based Planning V2
And as always this, for success, this approach requires:
- Managing risk
- Making estimates
- Measuring physical percent complete with Measures of Performance and Measures of Effectiveness