Power BI SSO with other app.

Hi all,

We have a requirement to embed a Power BI dashboard from the Power BI Pro account into another application (iframe preferred) in React JS, to user (onmicrosoft.com or guest user) in teh same Azure Active Directory, each of them can have a Azure Pro license.

I explore two options:

1. Power BI Secure Embed share

2. via Power BI Embedded service

For #1, it sounds the user must logon to Power BI once in the browser.  Is there a way to by pass the power BI login screen ?

Is #2 the only solution?