Active Directory and Microsoft Entra ID consolidation and separation for mergers, acquisitions and divestitures
We assist organisations with merging or splitting Active Directory and Microsoft Entra ID environments as part of a corporate acquisition, merger or divestiture, helping define identity models and synchronization strategy.
Our service covers planning forest and tenant topologies, configuring synchronization and trust strategies, managing cutover waves and validating identity and access outcomes to reduce disruption and preserve security during transitions.
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Service Overview
Highlights
- Identity strategy for consolidation or separation
- Forest and tenant topology design
- Synchronization and trust configuration
- Cutover and validation support
Business Benefits
- Improved operational consistency after merger or acquisition
- Clear separation of entitlements for divestiture
- Reduced risk during identity transitions
- Better alignment of hybrid and cloud identity infrastructure
Typical use cases
- Consolidating multiple Active Directory forests into one
- Splitting an Active Directory for divestiture
- Merging Microsoft Entra ID tenants and synchronised environments
- Planning hybrid identity strategies with Entra Connect
Objectives & deliverables
What Success Looks Like
- Assess on-premises and cloud directory estate
- Plan and document consolidation or separation topology
- Configure necessary trusts and synchronization rules
- Validate post-cutover identity integrity
What You Get
- Consolidation or separation strategy artefacts
- Topology and cutover design
- Configured synchronization and trusts
- Validation and cutover reports
How It Works
- Conduct directory discovery and inventory
- Design forest, domain and tenant strategy
- Configure synchronization, trusts and federation
- Perform cutover, validation and decommissioning
Engagement Options
- Discovery and Assessment Workshop
- Active Directory Consolidation Engagement
- Divestiture and Separation Implementation
- Post-Cutover Validation and Optimisation
Additional Information
Prerequisites & licensing
Before starting this service, ensure that you have access to the current directory infrastructure and clear governance on merger or separation objectives.
- Access to existing Active Directory and Entra ID environments
- Stakeholder alignment on consolidation or separation goals
- Documentation of identity and authentication dependencies
- Coordination with application owners for cutover impacts
Security & Compliance Notes
- Identity transitions can expose security risks if not planned and monitored carefully
- Directory synchronization and trust configurations should follow least privilege principles
Common Bundles
Customers who use this service often bundle with these services
Identity & Access Enablement Workstream
Configure Entra ID conditional access, privileged identity management, and governance features unlocked by E3 to E5 upgrades licensing.
Tenant-to-Tenant Migrations
Plan and execute tenant to tenant migrations across Microsoft 365 workloads, preserving data, identities and access during organisational change.
Project Management (End‑to‑End)
Project management for Microsoft programmes, delivering governance, planning, risk control, stakeholder alignment, and predictable execution through handover delivery.
Programme Delivery & Multi‑Workstream Management
Programme delivery service coordinating multiple Microsoft workstreams through governance, dependency management, reporting and assurance for predictable outcomes programmes.
Frequently Asked Questions
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