Power BI Embedded App Owns Data and Azure AD

I have embedded Power Bi into a react.js application and have generated the embeddded token which expires after a certain point (maybe an hour). 

I've read that the token generation should be completed on the server side and it also appears that Azure AD is required.

Azure AD can get expensive, I wanted to check to see if this is essential to embed Power BI in an App Owns Data scenario or if there are other options to securley generate the token and embed Power BI?