External sharing is not one setting. It is a collaboration risk model across tenant settings, site settings, link types, identity, data sensitivity, ownership and lifecycle. This interactive policy builder helps Microsoft 365 admins, SharePoint admins and security teams design practical sharing controls that enable collaboration without creating uncontrolled data exposure. Includes a 10-input sharing risk scoring engine, tenant-level and site-level sharing recommendations, link type decision framework, guest access lifecycle with Entra B2B, anonymous link guidance, sensitivity labels and DLP integration, Copilot oversharing remediation, Conditional Access for external users, rollout phases, and 16 common sharing mistakes from real tenants.
