The planning gap
A project board sees its project. The knock-on effects land elsewhere.
PRINCE2 builds control around managing by stages and managing by exception. At each stage boundary, the project board asks whether the business case still holds. Now a stage is forecast to exceed its time tolerance, and the exception plan asks for more time and more engineers. Those engineers were planned into another project’s stage, and the extra months push a dependent release into the next fiscal year. None of it belongs to this project, so it surfaces weeks later in someone else’s highlight report.
MSP delivers a program in tranches, steps of new capability with a chance to stop, adjust or carry on after each one. The end of a tranche is when the program asks its most useful question: is the next tranche still the right one? Answering it well takes more than a status report. The board needs to know what the next tranche asks of shared teams, what else competes for them, and which benefits move if it is re-scoped or delayed.
MoP treats resource management as a portfolio practice, not a project one, for good reason. Only the portfolio can see that the same architects are planned into several projects, a program and the day job of running live services. Benefits are defined, owned and reviewed with care, yet the decisions that move them are often made elsewhere: a capacity shortfall pushes a project out, a new mandate takes a team. Nobody decided to delay the benefits. They just moved.