An Architecture overview illustrates the central solution approaches of your software architecture - in compact form. Which ingredients are part of an Architecture overview?
Team or project members (e.g. developers) lack a high-level-overview of solution approaches in order to work effectively.
New team members who want to participate in development are not able to find their way within the architecture.
Decision-makers and other stakeholders lost confidence or do not fully trust the solution.
Colleagues outside of the team are interested in solution approaches, but find no or only very detailed information that makes it difficult to provide a quick overview.