What are the advantages of explicitly designing and documenting software architecture?

What are the advantages of explicitly designing and documenting software architecture?
Answer: 1. Stakeholder communication: The architecture is a high-level presentation of the system that may be used as a focus for discussion by a range of different stakeholders.
2. System analysis: Making the system architecture explicit at an early stage in the system development requires some analysis. Architectural design decisions have a profound effect on whether or not the system can meet critical requirements such as performance, reliability, and maintainability.
3. Large-scale reuse: A model of system architecture is a compact, manageable description of how a system is organized and how the components interoperate. The system architecture is often the same for systems with similar requirements and so can support large-scale software reuse.