Learning phase
The learning phase is the period after a campaign launch or significant change during which the bidding algorithm recalibrates. Performance is typically volatile until enough new conversion data accumulates.
Both Google and Meta re-learn after material edits: big budget or target changes, conversion-event swaps, major audience or creative overhauls. During learning, results are noisy and cost per result usually runs above steady state — judging (or panicking about) a campaign mid-learning is one of the most common self-inflicted wounds in paid media.
Practical rules: batch edits rather than trickling them daily, keep changes within roughly 20% steps, and give the system a conversion cycle (often 1-2 weeks) before evaluating. Accounts that thrash never leave learning.
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