Apart from an article from the verge announcing the capability, I can't find any developer documentation related to this functionality (tab/other interactive panel inside "the meeting experience"). Unless I'm looking in the wrong place, of course...
Has anyone been able to/found resources for integrating into the teams meeting experience?
You can add app to the meeting, The meeting app can deliver a user experience for each stage of the meeting lifecycle including pre-meeting, in-meeting and post-meeting app experience, depending on the attendee's status.Please check this docs for more info.