Individually, Auto campaigns, Phrase match, and Exact match are just settings. Put together in sequence, they form a structured system for turning uncertain keyword discovery into tightly controlled, proven campaigns — usually called the tiered funnel.
Tier 1 — Auto: Discovery
Amazon chooses what to target based on your listing. The goal here isn’t sales volume for its own sake — it’s finding which real customer search terms actually lead to a purchase, including ones you’d never have thought to bid on directly.
Tier 2 — Manual Phrase: Testing
Search terms that converted in Auto get moved into a Manual campaign on Phrase match, with a bid set specifically for that term rather than shared across dozens of auto-discovered terms. This is where a promising signal from Tier 1 gets enough dedicated spend to confirm it wasn’t a fluke.
Tier 3 — Manual Exact: Profit
Terms that keep converting consistently in Phrase get moved again, this time to Exact match — the most controlled, most targeted stage, where a proven performer gets to run at scale without the noise of broader match variations diluting its data.
The rule that makes the whole system work
Every time a term moves up a tier, it needs to be added as a Negative Exact in the tier it came from. Skip this step and the campaign it moved from keeps competing for the exact same search — bidding against your own Exact-match campaign, inflating your own CPC, and splitting what should be one clean performance history across two places.
Why this beats a flat structure
A single Auto campaign left to run indefinitely never gets more efficient — every converting term stays mixed in with everything else, sharing a bid that’s wrong for all of them. The tiered funnel is what turns “we found something that works” into “we’re now running that thing at the tightest possible cost, on autopilot, while still discovering the next one.”