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Event Post-Mortem One-Pager

What happened at the event, what went wrong and what changes next time.

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What’s on It

  • Headline numbersResults
  • TimelineWhat Happened on the Day
  • Bar chartCheck-In Wait by Time of Arrival (minutes)
  • Cycle diagramHow We Run It Next Time
  • Numbered stepsChanges

Sample One-Pager. Company and figures are made up.

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Post-Mortem: Ops Summit 2026
Events team · 3 weeks after
Results
Came, of 480 sold
412
Rating out of 5
4.4
Under budget
$18k
What Happened on the Day
8:00
Badge printer failed
A 40-minute queue
9:15
Opening 20 minutes late
13:00
Lunch ran out
For the last 60 people
16:00
Demos packed
Best-rated session
Check-In Wait by Time of Arrival (minutes)
52240311247:458:008:158:308:459:00
How We Run It Next Time
1Plan
Two badge printers and a paper list
2Test
A full dry run the day before
3Run
A queue host on the door at 7:30
4Review
Every lesson written up within a week
Plan
Changes
01
Two badge printers
And a paper backup list
02
Lunch for 110%
Of sign-ups
03
Twice the demo room
Book the hall

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