How to Check if Azure AD B2B Federation Supports Wildcard Domains
Question details
The user needs to know if Azure Active Directory (Microsoft Entra ID) B2B domain federation supports wildcard domains.

- Product
- Azure Active Directory (Microsoft Entra ID)
- Device & OS
- not provided
- Scenario
- Configuring domain federation for organizations with constantly changing public or private domains.
- Observed behavior
- The user is looking for confirmation on current wildcard federation capabilities to design a suitable identity architecture.
Gather your current Azure AD tenant details and a list of the domain structures you intend to federate before reaching out to Microsoft support.
Consult Microsoft Q&A for Azure Active Directory Support
Since this is a specialized Azure identity configuration, Microsoft Q&A is the appropriate platform to get confirmation directly from Azure support engineers.
Microsoft 365 community forums primarily focus on Microsoft 365 for Business (such as Exchange Online). Queries regarding Azure Active Directory or Microsoft Entra ID require assistance from dedicated identity support engineers.
Open your web browser and go to the official Microsoft Q&A website (learn.microsoft.com/en-us/answers).
Click on the option to post a new question and clearly describe your requirement for wildcard domain federation in Azure AD B2B.
Ensure you apply the 'Azure Active Directory' or 'Microsoft Entra ID' tags before submitting, so that Azure identity support engineers can quickly locate and address your query.

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Frequently Asked Questions
What is Azure AD B2B federation used for?
Azure AD B2B (Business to Business) federation allows your organization to securely share applications and services with guest users from other organizations while letting them use their own identity credentials.
Why is wildcard domain federation important?
Wildcard federation is beneficial for organizations that manage a constantly changing or highly dynamic set of public or private subdomains, saving them from the administrative overhead of configuring each domain individually.
Where is the best place to get Microsoft Entra ID support?
The best place to get dedicated support for Microsoft Entra ID (formerly Azure Active Directory) is the official Microsoft Q&A platform, using the specific Azure or Entra ID tags to reach specialized identity engineers.




