cross account collaboration

Cross account collaboration in Microsoft Teams enables users to work across multiple identities and tenants without constant sign-out and sign-in. The March 2026 update introduces smoother cross-account work, allowing participants to join meetings, share files, and collaborate while maintaining separate work and personal accounts. IT admins gain enhanced control over cross-account policies, improving security and privacy posture. This feature is part of Microsoft's broader effort to integrate identity management with productivity tools, making it easier for enterprise users to collaborate across organizational boundaries while keeping data governance intact.