What an activity can attach to
An activity can be logged against a deal, an account, or a contact, and can be linked or unlinked from any of those after the fact — a call logged against an account can later be attached to the deal it turned out to be about, for example.Meetings are a richer activity type
Ameeting-type activity carries extra structure the others don’t: attendees, a scheduled time and duration, a location or video-call link, and — when available — a transcript and recording URL. Meeting transcripts are what the deal-level call intelligence feature reads to extract talking points and follow-ups.