improve-codebase-architecture

Architecture deepening is the process of increasing module depth to hide implementation details behind simpler interfaces. You need it when planning refactors or architecture reviews to reduce system coupling, improve testability, and align structural changes with existing ADR guidance.

To identify deepening opportunities in a codebase, analyze module depth, coupling, and interface-to-implementation ratios. This process surfaces shallow modules and provides ADR-backed guidance on exactly where to place seams and adapters to improve maintainability.

Place seams and adapters at shallow module boundaries where interface nearly matches implementation. Targeting these high-coupling areas with ADR-aligned rationale separates concerns, reduces dependencies, and directly improves overall system testability and maintainability.

Architecture deepening increases module depth by hiding complex implementation details behind simpler, narrower interfaces. You need it during refactor planning or architecture reviews when high coupling and shallow modules reduce testability and maintainability across your system.

Yes, you can generate an HTML architecture report to communicate findings from shallow module analysis. This report outputs structured recommendations and ADR-backed rationale, detailing where to place seams and adapters to reduce coupling during refactoring.

Module depth analysis primarily targets structural coupling and shallow interfaces rather than runtime dependencies or performance bottlenecks. It should not be used as the sole method for refactoring when the core architectural friction stems from data flow or infrastructure scaling issues.