What is a Program Vision?
The program vision is the concise picture of the future state the program exists to create — vivid enough to align hundreds of people who will never attend the same meeting, stable enough to outlive component churn. It anchors the charter, opens the roadmap, and is the reference every trade-off ultimately argues back to.
Good visions describe the destination, not the vehicles: components can be added, killed, and re-scoped for years without the vision moving, which is exactly what makes it useful.
Worked example
A national postal service's program vision: "any parcel, anywhere in the country, next day — profitably." Over five years, the sorting-automation component doubles in scope, the drone pilot dies, and two software platforms swap vendors. Every one of those decisions was argued against the same eleven words — which is why five years of turbulence produced convergence instead of drift.