Calendar risk
Creative, inventory, approvals, and media changes operate on different deadlines.
Campaign Budget Optimizer for seasonal advertisers
Reserve holiday budget in advance, release contingency funds against evidence, and schedule the rollback before launch.
Where control breaks
Creative, inventory, approvals, and media changes operate on different deadlines.
Strong early results create pressure to release the entire reserve against an immature window.
Temporary settings remain live because the rollback was never part of the approved plan.
The control model
Put market events and internal decision deadlines on one budget calendar.
Separate committed event funds, protected baseline, and contingency.
Define release and rollback rules before the promotion begins.
Reconcile the final result after conversion lag matures.
What the record proves