Campaign structure decisions outlive individual optimizations. The campaign type you run, whether you separate brand traffic from discovery, and whether a CSS partner or a second platform earns its overhead all set a ceiling that no amount of tactical work will lift.
Performance Max bundles Search, Shopping, YouTube, Display, Discover and Gmail into one campaign and one set of reporting. It generally performs, and it reports far less than Standard Shopping did — so the decision is whether the reach is worth the loss of control and visibility.
How you split traffic across campaigns decides what each one can learn. Segmentation buys you control over budget and bidding, and takes away the conversion volume each campaign needs to make good decisions on its own.
Google Shopping is not the only route to a Shopping placement, and the alternatives change your cost base rather than just your reach.
Use Standard Shopping if you want full control over bids, search terms visibility, and product group targeting. Use Performance Max if you want AI-driven optimization across all Google networks and have sufficient conversion data. Many advertisers run both: Standard Shopping for control on Search, Performance Max for incremental reach.
The best structure depends on your goals. Common approaches include: single campaign (simple, low-control), brand/non-brand split (protect brand traffic), margin-based tiers (bid by profitability), and performance tiers (separate heroes from long-tail). Most mid-size advertisers benefit from 3-5 campaigns segmented by margin or performance.
Manual CPC gives full control but requires more management time. Automated bidding (Target ROAS, Maximize Conversions) works well with sufficient conversion data (15+ conversions/month). Start with manual to understand your data, then test automated bidding once you have conversion history.
Create two campaigns with identical product groups. In the brand campaign, add competitor and generic terms as negative keywords. In the non-brand campaign, add your brand terms as negatives. Set higher priority on the non-brand campaign so it catches generic traffic first, with brand campaign as fallback.