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Alpha

This site is an alpha version and is still being developed in the open - your feedback will help us improve it. See the roadmap. Last updated: 14 October 2026.

Version in force: 0.3.0 (6 October 2026).

Templates

Lightweight templates for the most common architecture artefacts. Copy them into your repository and adapt as needed.

Template Use it when
Architecture decision record You make a significant design decision
TDA submission You are bringing work to the Technical Design Authority
Guardrail exception request You cannot meet a Must guardrail
Threat model You are threat modelling a service or change

Each template is plain Markdown so it can live in your repository next to your code. Select Edit this page at the top right of any template to see its source.