Copilot doesn't bypass your permissions. It respects them perfectly, which means it surfaces everything your users can technically access, including sites nobody remembers sharing. This checklist walks IT and security teams through seven readiness phases, with 57 evidence-backed items and formal go/no-go gates before the pilot and before broad rollout.
Most stalled deployments trace back to the same story: a pilot user asks a routine question and gets an answer drawn from content they were never meant to see.
Copilot retrieves from everything a user can technically reach. Sites shared with 'Everyone except external users' years ago are suddenly one plain-English question away.
Old organization-wide links grant standing access long after everyone has forgotten them. Copilot honors every one of them until you expire them.
Nobody browses to the forgotten finance site, so nothing looks wrong. AI-powered retrieval changes that overnight, which is why governance has to come before enablement.
The checklist puts the fixes in the right order: audit permission sprawl, clean up sharing links, label and protect sensitive content with Microsoft Purview, and only then assign licenses.
57 checklist items, each with a why-it-matters line, an evidence field, and an owner. Work through the phases in order; the gates check that nothing was skipped.
Eligible base plans, Exchange Online mailboxes, Entra ID, OneDrive, update channels, and network endpoints. The technical floor before any governance work.
The decisive phase: permission sprawl audit, sharing-link hygiene, sensitivity labels, DLP for Copilot, and Restricted Content Discovery decisions.
Audit logging for Copilot interactions, retention and eDiscovery, web grounding posture, and the agent governance baseline.
A real-business cohort, success metrics with baselines, a feedback loop with an owner, and a containment plan you hope never to use.
An AUP amendment that names Copilot, acceptable-prompt guidance, training before license assignment, and signed acknowledgments.
Staged waves with checkpoints, continuous oversharing monitoring, audit review, agent reviews, and a warm incident path.
The 90-day review: re-run the oversharing assessment, tune labels and DLP, retire temporary restrictions, and report to the sponsor.
Two formal decision points keep the rollout honest. Every criterion must be Go; a single No-go pauses the launch until it is resolved or waived in writing.
The template includes a worked example of a No-go handled well: restrict the flagged sites, remediate, reconvene twelve days later, start clean.
Gate B turns pilot evidence into a rollout decision your governance committee can stand behind.
Copilot is rarely the only AI in the building. Aona discovers every AI tool your employees already use, shows what data flows into them, and keeps your AI inventory audit-ready for the rollout.