A panel presentation is a more traditional approach to having a panel: The moderator introduces each panelist, does some moderated Q&A with the first panelist, then moves on to the second panelist, etc. I call this format a "presentation style" type of panel. It is clearly not a panel discussion as the panelists are not having a conversation among themselves.
Whereas a panel discussion includes time for the panelists to interact with each other - either from the onset or after the panelists' initial remarks/presentations.
Why does this matter? Find out here.