How to create Custom Policies for multiple clients

Hello Gurpreet0101Singh-9444,

Thank you for Reaching Out Microsoft Q&A Platform.

You do not need to create separate custom policies for each client. Instead, you can parameterize a single policy using techniques like:

1. Custom Attributes

• Tag users with a clientId or organizationId.
• Use this attribute to drive conditional logic in the policy. https://learn.microsoft.com/en-us/azure/active-directory-b2c/user-profile-attributes

2. Claims-Based Branching

• Use <Predicates> and <Preconditions> to branch logic based on clientId.
• Example: If clientId == "ClientA", call REST API A; else call REST API B. https://learn.microsoft.com/en-us/azure/active-directory-b2c/custom-policies-series-overview

3. REST API Integration

• Call a REST API to fetch client-specific logic or branding dynamically.
• This keeps your policy clean and offloads logic to your backend. https://learn.microsoft.com/en-us/azure/active-directory-b2c/custom-policies-series-overview

4. Custom Domains and UI Branding

• Use query strings or domain names to load client-specific branding. https://learn.microsoft.com/en-us/azure/active-directory-b2c/custom-domain?pivots=b2c-user-flow
  You can also found similar Question reference:
  https://learn.microsoft.com/en-us/answers/questions/2262067/managing-identity-with-azure-entra-for-multiple-cl

5. Multitenant Architecture

If clients are in separate tenants, consider using federation or multi-tenant sign-in.

https://learn.microsoft.com/en-us/azure/active-directory-b2c/identity-provider-azure-ad-multi-tenant?pivots=b2c-user-flow

Hope this helps to resolve your issue.
Regards,

Monalisha