What is a retention curve?
A retention curve shows how many people were still present at each moment of a session, as a share of the peak audience. Its shape says more about a session than any single attendance figure.
How to read a retention curve
- A slow, steady decline is normal: people have other commitments.
- A sharp step down marks a drop-off point: something specific just happened.
- A curve that rises again shows late joiners or a moment people came back for.
- A line that stays near the top is rare, and means the session held its audience.
A retention curve example
A 45-minute webinar peaks at 200 people five minutes in, holds around 180 for twenty minutes, then falls to 120 within three minutes when the speaker starts a product demo, and ends at 100. Webinar retention at the end is 50%, and the curve points straight at the demo as the part to fix.
Retention curve vs attendance
Attendance tells you how many people turned up; the curve tells you whether the session was worth staying for. Two sessions with the same attendance can have opposite curves, and only one of them deserves to be repeated.
Retention curves in practice
Virtual Event Management Suite shows retention curves that identify which fifteen minutes lost the audience, so the next agenda can be built around what held people.
Last reviewed 2026-11-01.