Microsoft Active Directory
Microsoft Active Directory: A strong Windows directory service, but not a dedicated PKI platform. Ranked #26 of 26 in Public Key Infrastructure Software by our editors (6.3/10); pricing: Paid; best for windows directory environments needing authentication.
At a glance
- Editor score6.3 / 10
- PricingPaid
- Best forWindows directory environments needing authentication
- Free planNo
- Founded1975 · Redmond, Washington, United States
- Facts checked21 Sep 2026
Where it wins
- Kerberos SSO, LDAP, DNS, and integrated access control
- Group Policy centralizes administration for users and computers
- Replication and Global Catalog support multi-domain directories
Where it doesn't
- Not a certificate authority or certificate lifecycle product
- Windows-only platform with Windows Server CAL requirements
- Higher tiers require core-based licensing for 16 core licenses
Our verdict on Microsoft Active Directory
Microsoft Active Directory Domain Services is a Windows Server directory service for managing users, computers, groups, servers, and shared resources. It is designed for on-premises and hybrid Windows environments, including organizations and applications that depend on LDAP, Kerberos, NTLM, DNS, or Group Policy. Its central role is identity, authentication, authorization, and domain-based access control rather than certificate management.
The platform provides Kerberos authentication with ticket-based single sign-on, integrated access control, directory queries, indexing, and replication across domain controllers. Global Catalog helps locate directory objects across domains, while delegated administration and object-level permissions support distributed management. Centralized Group Policy applies settings to users and computers. Microsoft Exchange is listed as an integration, and smart card is listed as an MFA method. These capabilities make Active Directory a strong fit for Windows networks that need a hierarchical directory and centralized authentication.
Pricing is tied to Windows Server rather than a separately priced Active Directory product. Windows Server 2025 Standard is listed at $1,176 for 16 core licenses and is designed for physical or minimally virtualized environments; it requires Windows Server CALs. Windows Server 2025 Datacenter is listed at $6,771 for 16 core licenses and targets highly virtualized datacenters and cloud environments, also with CAL requirements. Windows Server pay-as-you-go is listed at $33.58 per CPU core per month through Azure Arc. Choose Active Directory when Windows directory services, Group Policy, Kerberos, and LDAP are central requirements. Organizations seeking certificate issuance or certificate lifecycle management should choose a dedicated PKI product instead.
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Microsoft Active Directory pricing
All 3 Microsoft Active Directory plans and prices →
Microsoft Active Directory fact sheet
| Free plan | No |
|---|---|
| Paid from | Not verified |
| Deployment model | Not verified |
| ACME support | Not verified |
| SCEP support | Not verified |
| EST support | Not verified |
| HSM integration | Not verified |
| Certificate profiles | Not verified |
| Deployment | Self-hosted |
| Platforms | Windows |
| Support | Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 1 integrations: Microsoft Exchange |
| Pricing | Paid (source) |
| Website | learn.microsoft.com |
| Facts checked | 21 Sep 2026 |
Microsoft Active Directory integrations
Microsoft Active Directory lists 1 integrations on its own site.
- Microsoft Exchange
Alternatives to Microsoft Active Directory
- EJBCAA broad, self-hosted PKI platform with deep certificate and deployment support.9.4
- DigiCert Private CAA flexible private CA for enterprises managing certificates across hybrid and air-gapped environments.9.2
- SSL.com Private Enterprise PKIManaged private PKI with broad enrollment protocols, lifecycle controls, and published plan pricing.9.1
See all Microsoft Active Directory alternatives →
Also Ranked In
Microsoft Active Directory is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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