Multi-Forest AD Consolidation
Two decades of acquisitions had left the logistics company with five Active Directory forests connected by a fragile web of trusts. Cross-forest collaboration was painful, security policy was inconsistent, and nobody could confidently inventory who had access to what. Manual migration of 120,000+ objects was deemed too risky and slow.
Mapped every forest, trust, and dependency, and scored each for security and migration complexity.
Designed a single target forest with a clean OU structure and tiered administration model.
Built PowerShell automation to migrate, remap, and validate users, groups, and computers in waves.
Identified and quarantined 40,000+ stale and orphaned objects before migration.
Cut over each business unit on a published schedule with automated rollback checkpoints.
All five forests were consolidated into one well-governed directory with consistent security policy. Automated migration moved 120,000+ objects accurately, and the cleanup eliminated years of accumulated identity sprawl.
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