Adding sign in log info

Adding info about what is shared in the sign in log for both home tenant and resource tenant for B2B users. This was an ask from privacy and legal to make this information available.

Author: Sammak

articles/active-directory/external-identities/external-collaboration-settings-configure.md

@@ -71,10 +71,14 @@ Here's an example that shows how to use PowerShell to add a user to the Guest In
 Add-MsolRoleMember -RoleObjectId 95e79109-95c0-4d8e-aee3-d01accf2d47b -RoleMemberEmailAddress <RoleMemberEmailAddress>
 ```
 
+## Sign in logs for B2B users
+
+When a B2B user signs into a resource tenant to collaborate, a sign in log is generated in both the home tenant and the resource tenant. These logs include information such as the application being used, the tenant name and tenant ID for both the home tenant and the resource tenant, and their email address. 
+
 ## Next steps
 
 See the following articles on Azure AD B2B collaboration:
 
 - [What is Azure AD B2B collaboration?](what-is-b2b.md)
 - [Add B2B collaboration guest users without an invitation](add-user-without-invite.md)
-- [Adding a B2B collaboration user to a role](./add-users-administrator.md)
+- [Adding a B2B collaboration user to a role](./add-users-administrator.md)