Hello,
Thanks for reading my question.
We have a website (non-power pages) and let's call it Host website. This host website is using Azure AD B2C for Identity/authentication. Currently, we're utilizing Power Pages which is also using the same Identity/Authentication Azure AD B2C. This Power pages site is embedded into Host website by iframe without Power pages header / footer.
What we're planning to achieve is that whenever user login into our Host Website (non-power pages) one and try to access the Power pages site through iFrame, user doesn't need to authenticate again.
Kindly let me know if more clarification needed. Thanks.