Domain Functional Level is the Active Directory domain functional level, which defines available AD DS features and the minimum domain-controller version.
Simple definition
Domain Functional Level is the Active Directory domain functional level, which defines available AD DS features and the minimum domain-controller version. It belongs to the Active Directory vocabulary and is useful when reading architecture diagrams, product documentation, logs, or administration procedures.
What is it used for?
Its main purpose is to enable directory capabilities that are compatible with every domain controller in the domain. The practical value depends on the surrounding architecture, security model, and operational requirements.
How does it work?
The level is a domain property. It should be raised only after verifying compatibility of all DCs and dependent applications.
Key points
- Scope: The Active Directory domain functional level, which defines available AD DS features and the minimum domain-controller version.
- Operational goal: Enable directory capabilities that are compatible with every domain controller in the domain.
- Implementation: The level is a domain property. It should be raised only after verifying compatibility of all DCs and dependent applications.
Points to watch
Raising the level is an architectural change: validate Windows Server versions, replication, and backups first.
In short
Domain Functional Level = the Active Directory domain functional level, which defines available AD DS features and the minimum domain-controller version. Use it when you need to enable directory capabilities that are compatible with every domain controller in the domain.