Bidding and optimization
Learning phase
The period after a campaign or ad set is created or significantly changed, while the platform's delivery system learns who to show it to.
What it is
Results are less stable during learning. Meta labels ad sets in learning; Google shows a similar learning status for bid strategies.
Why it matters
For lead generation and e-commerceFrequent edits keep campaigns learning, so they never settle at a stable cost.
In practice
Make changes in batches, avoid large budget jumps, and give campaigns enough conversions to exit learning.
A common mistake
Judging a campaign in its opening days, or editing it every time results wobble.