
Google's help page used to say 7 to 14 days.
Changes to budgets, targets, creatives or targeting no longer trigger Learning. Budget and target changes apply immediately.
Three causes are left:
a new bid strategy
a composition change
a goal change in conversion objectives
PMax and Demand Gen can take up to 7 days to ramp up ad serving. That was 5 days before.
Spotted by Hana Kobzová, via PPC News Feed.
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