Tenant consolidation as an identity risk event

Most organizations don't plan to operate multiple Microsoft 365 tenants, but tenant sprawl has a way of becoming permanent architecture. Mergers, acquisitions, regional autonomy, and decentralized IT practices leave enterprises managing fragmented identity environments where policies diverge, security controls mature unevenly, and no one knows who has access to what resources, under what conditions, and why. Tenant consolidation offers a path forward, but the migration window itself is one of the highest-risk moments in the identity lifecycle.

This white paper examines why tenant consolidation must be treated as a security transformation, not a routine workload move, and what it takes to emerge with a cleaner, more governable, and more defensible identity environment.