The Amazon PPC Campaign Structure That Took ROAS from 3.2× to 10.6×
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In 2022, I started working with a Premium Lifestyle Accessories brand on Amazon India. Their marketplace ROAS when we met was 3.2×. They were spending ₹1,80,000 per month on Amazon ads and generating ₹5,76,000 in attributed ad revenue. Decent, but not scalable — their margins couldn’t support the ad load at the volumes they wanted to reach.
Six months later, the same budget was generating ₹19,08,000 in ad revenue. ROAS had gone from 3.2× to 10.6×. This is the exact campaign structure that made it happen.
Why the original campaign structure was the problem
When we audited the account, the entire ad strategy was running through two campaigns: one Auto campaign covering all ASINs, and one Manual Broad Match campaign with 40 keywords across all products. Everything competed with everything. There was no separation between discovery spend and performance spend. The algorithm had no way to learn what worked because every campaign was trying to do everything at once.
This is the most common Amazon PPC structure for sellers in India generating between ₹10–50 lakh monthly GMV. It works well enough to start but has a ceiling — and that ceiling is exactly where this brand was stuck.
The 3-layer campaign architecture that changed everything
Layer 1 — Discovery campaigns (Auto + Broad)
Purpose: find new converting search terms. These campaigns run with moderate bids and a controlled daily budget — typically 20–25% of total ad spend. Their only job is to surface search terms and ASINs that convert.
We set Auto campaigns at a Target ACOS of 35% — above our profitability threshold but acceptable as a research cost. Every week, we pulled the search term report and identified any term with 3+ conversions in the past 30 days. Those terms immediately graduated to Layer 2.
Negative keywords from discovery campaigns are added weekly. Any term with 8+ clicks and zero conversions goes on the permanent negative list.
Layer 2 — Expansion campaigns (Phrase Match)
Purpose: scale proven terms with controlled variation. Graduates from Layer 1 enter Phrase Match campaigns here. Phrase match captures the exact term plus surrounding words — giving reach while maintaining intent relevance.
This layer runs at target ACOS 25–28% — tighter than discovery, still allowing some variation to surface long-tail conversions. Budget allocation: 35–40% of total ad spend.
Terms in this layer are reviewed monthly. High-converting, high-volume terms with stable ACOS get promoted to Layer 3. Terms with ACOS consistently above 35% after 60 days get bid-reduced or moved back to discovery bids.
Layer 3 — Performance campaigns (Exact Match)
Purpose: extract maximum return from terms we know convert. Only exact match keywords with proven conversion history enter here. These campaigns receive the highest bids and the highest daily budgets — 40–45% of total ad spend.
Target ACOS on performance campaigns: 15–20%. Because we know these terms convert, we bid aggressively for top-of-search placement. These are the campaigns generating the highest ROAS in the account.
A performance campaign is never touched unless ACOS deviates by more than 5 percentage points from target for two consecutive weeks. Stability here is the goal — not constant optimisation.
The bid formula we used
Bid calculation for exact match campaigns uses a simple formula: Target CPC = (Product Price × Target ACOS) ÷ Conversion Rate.
For a ₹1,200 product with target ACOS of 18% and conversion rate of 12%: Target CPC = (1200 × 0.18) ÷ 0.12 = ₹180. This is the maximum bid that keeps ACOS at target. Starting bid is set at 80% of this (₹144) and adjusted based on actual performance over 2 weeks.
This formula replaced gut-feel bidding entirely. Every exact match keyword in every performance campaign has a calculated bid ceiling. Deviating above it requires a documented reason.
The Sponsored Brands layer that unlocked the final ROAS jump
The jump from 7× to 10.6× ROAS came from adding a Sponsored Brands layer that we had not been running. At 7× ROAS, the Sponsored Products structure was optimised. But on competitive category keywords, we were losing top-of-search placement to a competitor running aggressive Sponsored Brands.
We launched Sponsored Brands campaigns on the top 8 category search terms with a video ad showing the product in use. This captured buyers at the moment of category intent — before they saw any competitor’s Sponsored Products. Click-through rate on our Sponsored Products increased because fewer buyers were getting captured above us. The incremental ROAS on Sponsored Brands itself was 6.2× — and the halo effect on Sponsored Products pushed blended ROAS to 10.6×.
The weekly operating cadence
This campaign structure only works if it is maintained with discipline. The weekly routine that kept it performing:
- Monday: Pull search term report for past 7 days. Add negatives (8+ clicks, 0 conversions). Flag any discovery terms with 3+ conversions for promotion review.
- Wednesday: Review performance campaign ACOS. Any campaign deviating 5%+ from target gets a bid adjustment. No campaign gets touched more than once per week.
- Friday: Promote qualifying search terms from discovery to expansion. Promote qualifying expansion terms to performance. Update bid calculations for any newly promoted keywords.
Total time investment per week: 90 minutes. The discipline to maintain this cadence without skipping weeks is what separates sellers who sustain 8–10× ROAS from those who hit it once and drift back to 4×.
Frequently asked questions
What is a good ROAS target for Amazon India sellers?
A good target ROAS depends on your product margin. For most Fashion and Lifestyle sellers with 50–65% gross margins, a blended ROAS of 5–8× is healthy and sustainable. ROAS above 8× is achievable in well-structured accounts with strong organic rank support. Chasing maximum ROAS by cutting budget to only high-ROAS campaigns often sacrifices organic rank — the smarter goal is profitable ROAS at the volume needed to maintain rank.
How much should I spend on Amazon advertising to see results?
The minimum meaningful budget for structured 3-layer PPC on Amazon India is ₹30,000–50,000 per month per ASIN cluster. Below this threshold, discovery campaigns don’t accumulate enough data to surface reliable converting terms within a reasonable timeframe. The structure described in this article scales effectively from ₹50,000 to ₹5,00,000+ monthly with the same principles.
How long does it take to see ROAS improvement after restructuring Amazon PPC?
Most sellers see measurable ROAS improvement within 3–4 weeks of implementing negative keyword hygiene and match type separation. The full impact of the 3-layer structure typically emerges at 60–90 days as performance campaigns accumulate data and discovery campaigns refine their negative keyword lists.
What is the difference between Auto and Manual Amazon PPC campaigns?
Auto campaigns let Amazon decide which search queries to show your ads on, based on your listing content and category. Manual campaigns let you specify exact keywords or product targets. Auto campaigns are best for discovery — finding new converting terms. Manual exact match campaigns are best for performance — controlling spend on proven converters. Both types are necessary in a well-structured account.
The complete 3-layer campaign structure, bid formulas, weekly audit templates, and Sponsored Brands strategy are documented in full detail in the Amazon Growth Unlocked playbook.