The work nobody has energy for and everybody wishes had been done. Client reports that prove value, internal debriefs that actually change something, and turning a delivered event into the material that wins the next one.
The hour after the event is worth a week of trying to remember, and almost nobody uses it.
A document that proves value and opens the next conversation.
The one that changes how you work, which is the one most often skipped.
Feeding what you learned back into the templates, the data and the libraries, so the next event starts further forward.