An Architecture Design Authority is the body that keeps architecture decisions consistent and accountable. Set it up well and it enables delivery; set it up badly and it becomes a bottleneck everyone routes around.
The Design Authority (DA) reviews significant solutions and changes, applies architecture principles and standards, grants exceptions, and makes or ratifies key architecture decisions. It's where governance meets real projects.
Start with a clear terms of reference: the DA's purpose, scope (what must come to it), membership, how often it meets, and how it makes decisions. Ambiguity here is the main reason DAs drift.
Define what the DA decides versus what it advises, and what individual architects can approve without it. A RACI makes this explicit and stops the DA becoming a rubber stamp or a blocker.
Right-size the scope so only genuinely significant work comes to the DA, give clear guidance up front, and keep decisions fast. Governance that helps teams ship earns their cooperation.
The Architecture Practice Setup Kit includes a Design Authority terms of reference, meeting guide, and a decision-rights & RACI — plus the whole governance operating model.
