What Active Directory is
Active Directory (AD) is Microsoft's directory service for Windows domain networks. It provides centralised authentication, authorisation, group policy management and DNS services for an organisation's users, computers and resources. Active Directory is the backbone of identity management in almost every Windows-based enterprise environment.
Through Group Policy Objects (GPOs), administrators can enforce security policies, deploy software, configure desktop settings and manage permissions across thousands of machines from a single console. AD integrates with LDAP and Kerberos for authentication, and with DNS for service location.
How I have used it
I gained Active Directory exposure at ITHQ Ltd, where it was part of the managed-services environment for client infrastructure. This included user and group management, policy configuration and troubleshooting authentication issues.
To keep my AD skills current, I run a Windows Server 2025 instance in my own lab specifically for Active Directory practice. This lets me test domain configurations, group policies, user provisioning and authentication flows in a controlled environment without affecting production systems.
What I have done with it
- User, group and organisational-unit management
- Group Policy Object configuration and troubleshooting
- DNS integration with Active Directory zones
- Authentication troubleshooting (Kerberos, LDAP)
- Windows Server 2025 lab environment for ongoing practice
- Integration with JumpCloud for hybrid identity scenarios
Why this matters
Active Directory is the identity backbone of most enterprise Windows environments. Any infrastructure or IT support role will involve AD at some level — whether that is managing users, troubleshooting login issues, applying security policies or integrating with other systems. Running it in my own lab means I can practice and experiment without the constraints of a production environment.
How to deploy or reproduce it
Create an isolated Windows Server VM with a fixed lab address, install the Active Directory Domain Services and DNS roles, and promote it to a new lab-only forest.
Add test users, groups and joined clients gradually, take snapshots before policy changes and keep the lab domain separate from household or production accounts.