DIfference between Power BI Embedded and Report Integration with IFrame

Hi,

Can someone explain the difference between Power BI Embedded where I can embed the reports in my own web application.

And what's the difference if I will do that using Integrate a report into an App.

: https://powerbi.microsoft.com/en-us/documentation/powerbi-developer-integrate-report/

The requirement I have is to share the reports from Power BI with a set of 1000 users based on their roles.

Thanks