Hello Parekh, Bijal,
Thank you for posting your query in the Microsoft Q&A Community.
I understand that you would like to know if you could configure Ping as an Identity Provider in Azure B2B.
Please be informed that you can set up a direct federation with identity providers that support SAML 2.0 or WS-Fed Protocol for your guest users.
Kindly visit this link to get more information about this,
Babafemi