Merge pull request #185234 from kengaderdus/add-note-in-billing-model

[Azure AD B2C] Add note to billing model

Author: PRMerger8

articles/active-directory-b2c/billing.md

@@ -8,7 +8,7 @@ manager: CelesteDG
 ms.service: active-directory
 ms.topic: reference
 ms.workload: identity
-ms.date: 01/14/2022
+ms.date: 01/17/2022
 ms.author: kengaderdus
 ms.subservice: B2C
 ms.custom: fasttrack-edit
@@ -84,6 +84,7 @@ A subscription linked to an Azure AD B2C tenant can be used for the billing of A
 
 After you complete these steps for an Azure AD B2C tenant, your Azure subscription is billed based on your Azure Direct or Enterprise Agreement details, if applicable.
 
+
 ## Change your Azure AD pricing tier
 
 A tenant must be linked to the appropriate Azure pricing tier based on the features you want to use with your Azure AD B2C tenant. Premium features require Azure AD B2C Premium P1 or P2, as described in the [Azure Active Directory B2C pricing](https://azure.microsoft.com/pricing/details/active-directory-b2c/). 
@@ -110,6 +111,9 @@ To change your pricing tier, follow these steps:
 
    ![Screenshot that shows how to select the pricing tier.](media/billing/select-tier.png)
 
+> [!NOTE]
+> Currently, Azure AD Premium P1 for Azure AD B2C is the default pricing tier, and it's equivalent to Azure AD Free tier, but it costs money. Therefore, in terms of features, Azure AD Premium P1 license applied to Azure AD tenant, is not equivalent to Azure AD B2C Premium P1 license in a B2C tenant, and the same is true for Premium P2. Hence, you expect that some features available in Azure AD tenant may be missing in Azure AD B2C even when the tenants have Azure AD Premium P2 and Azure AD B2C Premium P2 licenses respectively. For instance, Azure AD Premium P2 offers identity protection in Azure AD B2C tenants, but does not offer other Azure AD Premium P2 features that apply to Azure AD tenants.
+
 ## Switch to MAU billing (pre-November 2019 Azure AD B2C tenants)
 
 If you linked your Azure AD B2C tenant to a subscription before **November 1, 2019**, the previous per-authentication billing model is being used. We recommend you upgrade to the monthly active users (MAU) billing model. Billing options are configured in your Azure AD B2C resource.