ddd-book

THE BOOK IS THE SOURCE OF TRUTH. IF IT'S NOT IN THE BOOK, IT DOESN'T EXIST.

Core principle: The Book is the single index of all engineering knowledge. If it's not indexed, it's not governed.

When to invoke

• Initializing DDD on a new project (.ddd/ does not exist)
• Adding or updating references in the Book manifest
• Releasing a new Book version
• Managing object passports
• Synchronizing the Book with existing project artifacts (ADRs, CONTEXT.md, AGENTS.md)
• Validating Book integrity
• When the project stack changes (new dependency, framework upgrade, database change)

When NOT to use