What it take to manifest an Architecture Plan

1. Buy in from top management.
2. A good understanding of the history, the current context, and the future direction of the solution space.
3. A good understanding of the existing business processes, and the willingness to change these processes.
4. A good understanding of the existing technical architecture.
5. A clearly defined architecture strategy.
6. A collaborative environment, where the team members are empowered to contribute. This not only helps in maturing the architecture but also helps in getting the implementers on-board with the architecture strategy.
7. A clearly defined architecture change management process.