adr-writing

You can document architecture decisions using a structured ADR log that enforces stable IDs (ADR-NNN), immutability for accepted records, and explicit supersession chains to maintain full traceability and prevent knowledge erosion.

Architecture decision records using the Michael Nygard format provide full narrative context with standard sections, while the Y-statement format offers a concise structure for capturing decisions quickly. Both formats support lifecycle states like Proposed, Accepted, Deprecated, and Superseded.

To supersede an accepted architecture decision, you create a new ADR with a new stable ID that explicitly references the old record, updating the ADR index/log so the original remains immutable and the supersession chain preserves the historical rationale.

Yes, the ADR workflow supports full lifecycle management across Proposed, Accepted, Deprecated, and Superseded states, providing a guided process for write, review, supersede, and index operations to track decision evolution.

You need formal architecture decision records in projects requiring traceability and immutability to prevent knowledge erosion, especially when multiple teams must understand, review, or supersede structural decisions over time.

You maintain an ADR index log by using a frontmatter-driven entry point that automatically tracks decision states and supersession chains, ensuring the index updates accurately as you write, review, or supersede records.