Active Directory Domain Topology
An Active Directory domain topology diagram shows the Windows infrastructure that supports identity and access. It puts domain controllers and DNS services beside the switches, servers, and user devices that rely on them. This makes it useful for an operations handoff, a security review, or a change plan. Start with the domain controllers, then add core connectivity, file services, administrative devices, and the client network. Label a controller with its additional roles, such as DNS, so readers can understand what remains available when a server is offline. Keep organizational units and policy links in a separate logical view when they would make this physical topology hard to read.
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Scenario
Document a small Windows domain before an audit or infrastructure change.
Key decisions
- Two domain controllers: Redundant directory and DNS services reduce a single point of failure.
- Core switch: The shared connection point makes the server and user network clear.
- Separate admin workstation: Privileged access is shown apart from ordinary staff devices.
When to reuse this
Use this view when the physical and service relationships around a single AD domain matter more than object-level detail.
Frequently asked questions
What belongs in an Active Directory topology?
Why show two domain controllers?
Is this an OU diagram?
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