Core Principle: Exact Match high ACoS is a symptom, not the root cause. Bid adjustment is Step 4 — not Step 1. Diagnose listing conversion rate, campaign structure, and keyword relevance before touching any bid.
| Role | Factors | Responsibility |
|---|---|---|
| PPC Manager | F2F4F5 |
Campaign structure audit, auction landscape review, break-even calculation |
| Listing Manager | F1F3 |
Conversion rate diagnosis, keyword relevance in listing content |
| Account Owner | All |
Final decision on bid adjustment, keyword continuation, or structural overhaul |
Adjusting bid while CVR is below 10% will only reduce spend — it will not make the campaign profitable. Fix the listing first.
If you are bidding on the same Exact Match keyword in both an Exact campaign and an Auto campaign simultaneously, you are competing with yourself in every auction — raising your own CPC.
- Factor 3 — Keyword Relevance in Listing Content
- Factor 4 — Auction Landscape & Competitor Bids
- Factor 5 — Break-Even ACoS Calculation
- AI Prompt Library — Claude & Gemini prompts for all 5 factors
- Live Scorecard + Downloadable Audit Report
Keyword stuffing — repeating the keyword 5–7 times in title and bullets — reduces readability and triggers Amazon's quality filters. One natural placement per section is sufficient.
Reducing bid immediately when the auction floor rises removes you from the auction entirely — you lose both paid sales and the organic ranking support that PPC activity was providing.
Making bid decisions without a calculated Break-Even ACoS means you are optimizing toward a moving target. A 45% ACoS is excellent for a 50% break-even product and catastrophic for a 25% break-even product.
| Situation | Root Cause | Recommended Action |
|---|---|---|
| ACoS high, CVR below 10% | Listing conversion problem | Fix main image, price, reviews, A+ Content before touching bid |
| ACoS high, CVR healthy, same keyword in Broad + Exact | Internal auction competition | Add negative exact in Broad and Auto campaigns immediately |
| ACoS high, CPC suddenly increased, no changes made | External competitor bid pressure | Monitor 7 days — if sustained, recalculate break-even and adjust |
| ACoS high, few impressions despite competitive bid | Keyword relevance issue | Add keyword to title, bullets, backend — wait 7 days for indexing |
| ACoS 2x break-even after all fixes applied | Keyword economics broken | Reduce bid to target ACoS level or pause and reassess keyword fit |
| ACoS within 10% of break-even, organic rank improving | Investment phase — halo active | Hold current bid — ACoS improvement will follow organic rank gain |
| Task | Who | Frequency |
|---|---|---|
| ACoS vs Break-Even check | PPC Manager | Weekly |
| Unit Session Percentage (CVR) review | Listing Manager | Weekly |
| Search Term Report pull and keyword-level ACoS | PPC Manager | Bi-weekly |
| Campaign structure audit (SKAG + negatives) | PPC Manager | Monthly |
| Auction landscape and CPC trend review | PPC Manager | Monthly |
| Full SOP audit run (all 5 factors) | Account Owner | Quarterly or when ACoS spikes |
| KPI | Healthy | Action Threshold |
|---|---|---|
| Unit Session Percentage (CVR) | Above 15% | Below 10% — fix listing before any bid change |
| Exact Match ACoS vs Break-Even | Below break-even | More than 10 points above break-even — restructure required |
| CPC trend (month over month) | Stable or declining | Up 20%+ — investigate auction landscape before reducing bid |
| Impression share (Exact Match) | Stable or growing | Declining with same bid — check relevance and competitor entry |
| CTR on Exact Match keyword | Above 0.5% | Below 0.3% — main image or title may be underperforming |
