Domain Controller per location

Question

A customer wants to consolidate several domains (7) in one single domain and forest in a single location.
At this point, all domains share a Trusted Relationship with each other and communicate under a provider’s MPLS.
Each domain supports around 30 users (60 in the worst case).

Is there any rule of thumb or best practice regarding the need to implement a domain controller per location considering the number of users?

Answer 1

This one may aid the decision making process.
https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/plan/planning-regional-domain-controller-placement

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Answer 2

Hi,
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Have a nice day!