Does Microsoft Teams have a embedded web browser?

my bot sends an Action.OpenUrl button. The documentation states “When invoked, show the given url either by launching it in an external web browser or showing within an embedded web browser”. The link I always open external web browser. What is an embedded web browser? does ms Teams have a built-in web browser?


Teams is an Electron app – link, meaning it is a Javascript app running in a web browser (a modified Chromium) in the first place.

Teams v2 will move to Edge WebView, so a different browser. source