Copilot Can’t Fix Your Information Architecture
Copilot can improve access to knowledge, but it cannot decide which source is authoritative or who should own it.
Copilot lowers the effort required to find and combine information. That makes good information architecture more valuable, not obsolete.
If three policies contradict one another, the model cannot determine which one the organisation intends to follow. If permissions are broad, security trimming faithfully reproduces broad access. If a site has no owner, Copilot cannot invent accountability for its content.
Start with high-value questions and trace the sources that should answer them. Establish authority, lifecycle and ownership for that narrow evidence set. Use labels and metadata where they support an actual retrieval or policy decision, not as decorative taxonomy.
Measure failures as information architecture signals: conflicting citations, stale answers, inaccessible authoritative sources and questions with no owned answer.
Copilot is a powerful interface over organisational knowledge. It also makes neglected information architecture easier to encounter. The organisation still has to decide what it knows, where that knowledge lives and who is responsible for keeping it true.