An architect engagement model has one fundamental purpose and that is to deliver value from the architecture function to the customer or employer. This value however needs to be decided by the architect team itself. This goes beyond individual contributor measurements such as performance plans for architects, though in advanced levels of maturity those will be tied into the goals of the architecture team.
There are signficant differences between the goals of the architecture team and the principles they use to guide architecture decisions.
Architecture Goal(s): A goal is the desired results of the architecture team’s activities over as measured over a specified period of time.
Architecture Principle(s): A principle is a fundamental proposition by the architecture team which serves as the basis for decisions by an architect within a specific engagement.
Building Architecture Goals