> For the complete documentation index, see [llms.txt](https://help.security.gallagher.com/knowledge-hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.security.gallagher.com/knowledge-hub/products/cc-software/configure/identity-solutions-cardholders-and-ope/entra-id/entra-id-deployment-options.md).

# Entra ID Sync deployment options

Choose an Entra ID Sync topology for Command Centre servers and Microsoft Entra tenants.

Security and IT usually deploy this together. In the diagrams, arrows indicate dependencies, not data flow.

Command Centre ↔ Entra ID Sync uses **HTTPS on port 8904/tcp (default)**. Entra ID Sync ↔ Entra tenant uses **HTTPS on port 443/tcp**.

| Option | Topology                                                               |
| ------ | ---------------------------------------------------------------------- |
| 1      | One Command Centre server, one Entra ID tenant                         |
| 2      | One Command Centre server, multiple Entra ID tenants                   |
| 3      | Multiple independent Command Centre servers, one Entra ID tenant       |
| 4      | Multiple independent Command Centre servers, multiple Entra ID tenants |

![Deployment Option 1 — one Command Centre server and one Entra ID tenant, with the Entra ID Sync PC between them (HTTPS 8904 to CC, HTTPS 443 to the tenant)](https://328339335-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6bM8WhlBE9BYizPWJaPN%2Fuploads%2Fgit-blob-4a25889966e1de8a179996725ba7214dae897044%2FSECHUB-ENTRA-08-deploy-option1.png?alt=media)

![Deployment Option 2 — one Command Centre server with multiple Entra ID tenants (single or multiple sync services)](https://328339335-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6bM8WhlBE9BYizPWJaPN%2Fuploads%2Fgit-blob-d5248507298f308bfc53bc7ef3ab14398c45d964%2FSECHUB-ENTRA-09-deploy-option2.png?alt=media)

![Deployment Option 3 — multiple independent Command Centre servers to one Entra ID tenant](https://328339335-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6bM8WhlBE9BYizPWJaPN%2Fuploads%2Fgit-blob-99e107630a508a6fb1c6cf45a7b9b37d2cf37c54%2FSECHUB-ENTRA-10-deploy-option3.png?alt=media)

![Deployment Option 4 — multiple independent Command Centre servers to multiple Entra ID tenants](https://328339335-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6bM8WhlBE9BYizPWJaPN%2Fuploads%2Fgit-blob-efff14bf083e3f06ebfd7430c5ecd2857684aff2%2FSECHUB-ENTRA-11-deploy-option4.png?alt=media)

***

🔗 **Related**

* [Configuration](/knowledge-hub/products/cc-software/configure/identity-solutions-cardholders-and-ope/entra-id/entra-id-configuration.md). Credentials and matching.
* [Limitations and Licensing](/knowledge-hub/products/cc-software/configure/identity-solutions-cardholders-and-ope/entra-id/entra-id-limitations-and-licensing.md). Multi-server support.


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