Practitioner field notes on Microsoft 365 Copilot governance after go-live: five domains, three archetypes, RACI realism, five ownership wars, the cadence that holds.

SharePoint Advanced Management is the Microsoft add-on that became the de facto requirement for any serious Microsoft 365 Copilot rollout. But the feature surface evolves quickly, the pricing model is per-user, and some of what SAM does is also achievable with other Microsoft 365 capabilities. This field guide explains what SAM actually delivers in 2026, when you genuinely need it versus when other features cover the use case, the decision framework I use in real engagements, and the operational model that keeps SAM useful after the licences are purchased.

Microsoft 365 Copilot does not create permission problems. It exposes the ones already in your tenant. This guide covers the three areas to fix before rollout: SharePoint oversharing, sensitivity labels, and DLP for Copilot.