1. Core business logic - With the why? if not obvious from code 1. Significant architectural design decisions - [Design Documents](Design%20Documents.md) - [Architectural Decision Records](Architectural%20Decision%20Records.md) - [Conjecture Records](Conjecture%20Records.md) in Data Science & Machine Learning settings 1. The dev env setup and how to run it - building, testing, deployment (CI/CD) 2. Any configuration that can be tweaked 3. How observability is handled - Monitoring and alerting configuration - Where the dashboards are - How alerts are produced Check out the [Project README](Project%20README.md) for a proposed structure.