Hi @thesamuelcheong, yes that is what I meant by participation data and yes we do use Teams premium to enable the integration to work. The person who sets up the webinar needs to have premium with attendance reports activated, in our experience. Your IT might need to confirm this (and I believe you need to activate this in the webinar settings as well). That could be the key in your case, actually. We use a Hubspot form and landingpage for the registration then add the contact to the Teams webinar via workflow after they have completed the double opt in (a requirement here in Europe thanks to GDPR). The calendar invite and reminder mails are then managed in/sent by Teams, as that’s how each individual receives their join link and their attendance is thus trackable. Keep me posted, hope this helps!