Net Promoter Score (NPS) measures attendee loyalty by asking how likely participants are to recommend the event. Scores range from -100 to +100.
NPS is simple to deploy post-event and helps compare satisfaction across editions, regions or formats.
Teams define the metric and data source before the event, capture values with consistent methods, and review results with finance, marketing and operations in the debrief. Without that discipline, KPIs stay slide titles instead of decision tools.
Without a shared metric definition, events get judged on attendance anecdotes and strategic impact disappears in slide decks.