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Optimal Active Directory Structure

Cover image for Optimal Active Directory Structure

Here’s a proven Active Directory (AD) structure commonly used by large organizations, including enterprises with over 10,000 employees globally. Such environments typically implement a domain tree structured by country or continent.

Example domain hierarchy#

  • Root domain: heyvaldemar.net
  • Child domains: canada.heyvaldemar.net, ireland.heyvaldemar.net

Each domain in the tree follows a consistent internal structure.

Active Directory OU structure showing grouped organizational units for a domain in Toronto

Domain-Level Organization by City#

  • Toronto (City of Toronto)

City-Level OUs by Object Type#

  • Groups - All security and distribution groups
  • Servers - All server objects
  • Service - Service accounts used to run applications
  • Users - End user accounts
  • Workstations - User endpoints

Groups - Organized by Scope#

  • Local - Domain-local groups
  • Global - Global groups
  • Universal - Universal groups
  • Distribution - Non-security mail groups

Servers - Organized by Service Role#

  • Disabled - Decommissioned or inactive servers
  • Exchange - Microsoft Exchange servers
  • File - File servers with shared resources
  • Normal - General-purpose servers
  • Print - Print servers

(More categories can be added based on operational needs.)

Service Accounts - Organized by Role#

  • Disabled - Inactive service accounts
  • Normal - Active service accounts used in production

User Accounts - Organized by Role#

  • Admins - Elevated-privilege accounts
  • Disabled - Former employees or inactive accounts
  • External - Contractors or third-party users
  • Normal - Standard user accounts

(Expand categories as needed for your organization.)

Workstations - Organized by User Role#

  • Admins - Devices used by admin accounts
  • Disabled - Retired or unused machines
  • Normal - Standard user workstations

Final Note#

This structure provides a scalable, secure, and easily manageable AD layout β€” ideal for delegation, policy application, and compliance.


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Optimal Active Directory Structure
https://www.heyvaldemar.com/optimal-active-directory-structure/
Author
Vladimir Mikhalev
Published at
2021-02-13
License
CC BY-NC-SA 4.0