What are the two ways in which an architectural model of a system may be used?

What are the two ways in which an architectural model of a system may be used?
Answer: 1. As a way of facilitating discussion about the system design. A high-level architectural view of a system is useful for communication with system stakeholders and project planning because it is not cluttered with detail. Stakeholders can relate to it and understand an abstract view of the system. They can then discuss the system as a whole without being confused by detail. The architectural model identifies the key components that are to be developed so managers can start assigning people to plan the development of these systems.
2. As a way of documenting an architecture that has been designed. The aim here is to produce a complete system model that shows the different components in a system, their interfaces, and their connections. The argument for this is that such a detailed architectural description makes it easier to understand and evolve the system.