How to Structure Google Ads for Ecommerce in 2025

Most Ecommerce brands we audit have the same structural problems — too many campaigns fighting over the same budget, shopping campaigns without any negative keyword logic, and Performance Max cannibalising their best-performing search terms.

Structure is not glamorous. But it is the single biggest lever on account performance.

Start with Intent Segmentation

The first principle is to segment your campaigns by purchase intent, not by product category.

Your audience exists on a spectrum. At the top, someone is browsing “best running shoes.” At the bottom, they are searching “buy Hoka Clifton 9 size 10 mens free shipping.” These two people need completely different bids, ads, and landing pages.

Building one campaign to serve both is where the money gets lost.

We typically build three intent layers:

1. Brand + exact product — your highest-intent, lowest-CPA traffic. Protect it with tight match types and aggressive bids.
2. Category + competitor — medium intent. Wider match types, tighter audience signals.
3. Awareness / demand capture — Performance Max or broad Display. Separate budget, separate reporting.

Performance Max Placement

Performance Max should supplement your search and shopping campaigns, not replace them.

The common mistake is to run one PMax campaign across your entire product catalogue and call it done. PMax works well when it has clean signals — your customer lists, your converters, your high-value segments. Without those signals, it defaults to prospecting, and you pay awareness CPMs on a conversion-rate budget.

Run PMax on your top 20% of products. Keep the rest in Standard Shopping with manual or Target ROAS bidding where you have the conversion volume to support it.

Shopping Campaign Architecture

For most Ecommerce brands doing $500K–$5M in annual revenue, we recommend a tiered Shopping structure:

• Priority High campaign — your hero SKUs, small budget, max CPC caps to protect margin
• Priority Medium campaign — core catalogue, Target ROAS once you have 30+ conversions/month per campaign
• Priority Low campaign — long-tail and clearance, broad match, lowest bids

Each tier uses negatives from the tier above to prevent bid cannibalisation. This is called a “priority waterfall” and it gives you explicit control over where Google spends first.

What This Looks Like in Practice

One of our clients — a bedding brand — came to us with seven campaigns all targeting the same top-20 products. The campaigns were competing against each other in auction, inflating their own CPCs by roughly 30%.

After restructuring into three intent tiers with proper negative keyword architecture, their average CPC dropped from $1.84 to $1.27 within 60 days. Same products, same bids, better structure.

Account structure is not a one-time project. It needs quarterly reviews as your catalogue, margins, and seasonal demand shift.

If you want a second opinion on your current structure, that is what the Free Growth Roadmap is for. Daryl will review your account personally and show you where the structural problems are.