Auto login from outlook with outlook credentials. Is it possible?

I am a newbie. We are looking for a suitable app for our organization. We just wonder that, if it is possible to login from outlook to video meeting with outlook credentials.
Let me explain a little bit further. For example , we sent an invitation mail for a video conference to a user working in our organization. And that user will click the meeting link and, she/he will be automatically joined the meeting by her/his credentials. Is the possible? Thank you very much in advance.