RKRizwan KhanDE

Active Directory & Recovery · Insight

Active Directory migration: check the dependencies before the target design

Anyone planning an Active Directory migration needs transparency about identities, trust boundaries, DNS, replication, GPOs, permissions, applications and operational responsibilities before the target design. The migration path has to handle technical and organisational dependencies together.

By Rizwan KhanTechnically reviewed: 1 Aug 2026

Identities and trust boundaries

First it must be clear which accounts, groups, services and administrative boundaries exist. Otherwise unclear responsibilities or implicit trust relationships are carried into the target unnoticed.

  • User, service and administrative accounts
  • Groups, delegations and privileged roles
  • Trusts and organisational responsibilities

DNS, sites and replication

Active Directory depends directly on name resolution, the site model and replication. These foundations must be matched against network paths, firewalls and operating locations.

  • DNS zones and forwarders
  • Sites, subnets and domain controllers
  • Replication paths and time windows

GPOs, permissions and applications

Applications and operating processes often use groups, attributes, paths or policies that do not show up in a pure object inventory. This usage determines the sequence and the scope of the pilot.

  • GPO links and filters
  • File, application and service permissions
  • Attributes, interfaces and technical accounts

From assessment to a controlled path

The assessment is translated into a phase model with pilot, transition rules, checks and fallback points. The public project evidence shows integration and recovery contexts without disclosing confidential target architectures.

  • Prioritised dependencies
  • Pilot and coexistence rules
  • Check, approval and handover points

Matching project evidence

July 2022 — March 2023

Volkswagen

I analysed heterogeneous Microsoft environments and developed integration paths for Active Directory, GPO, Intune and MECM.

June 2019 — October 2019

Eurofins

After a ransomware attack I developed a recovery concept and a controlled migration path to a newly built AD structure.

Matching service

Every AD migration starts with the uncomfortable inventory: trusts, permissions, DNS, replication. Skip it, and you migrate your problems along with everything else.

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