Saving someone a click and a bunch of streaming services irrelevant to the question.
"To watch CNN's US Presidential Debate online, it will be streamed in full and for free on the CNN YouTube channel."
This time there was no livestream with a realtime scoring from three separate panels of Republican voters, Democrat voters and independents. (Was it MSNBC or PBS which did that in 2020?) That's quite informative a third-party thing to add because it can distinguish between partisan vs nonpartisan issues vs outright gaffes, depending on which groups. (can also slice the response groups more finely, e.g. by age-group)