Power BI Cloud dashboards redirection

Hi. You can embedd power bi inside a custom web. You can use dashboards or reports. The auth can work in two ways. From one hand you can use microsoft authentication like Power Bi already has or you can own the security of the login building a custom one. You can read about that here: https://learn.microsoft.com/en-us/power-bi/developer/embedded/embed-tokens?tabs=embed-for-customers

This solutions is already prebuilt by some microsoft partners. An example of a web app embedding power bi is https://pibi.cloud

I hope that helps