Google Performance Max is a single campaign type that runs across Search, Shopping, Display, YouTube, Gmail, and Google Maps simultaneously — using AI to find conversions wherever they're most available. Lumo manages PMax with the audience signals, asset quality, and optimisation expertise that separates high-performing accounts from wasted spend.
Performance Max hands Google's AI more control than any previous campaign type — choosing placements, audiences, bids, and creative combinations automatically. This is powerful when configured correctly, and catastrophic when it isn't. Without proper audience signals, Google enters a lengthy learning phase burning budget on irrelevant placements. Without quality assets, PMax serves low-converting creative. Without proper exclusions, brand spend cannibalises non-brand performance.
The transparency problem is PMax's biggest challenge. Unlike Search campaigns where you can see every query, PMax provides limited search term visibility and no placement-level reporting. This means optimisation requires indirect signals — asset group performance, audience signal quality, and conversion data analysis — rather than the direct query mining available in standard campaigns. Agencies without PMax expertise often can't diagnose why performance fluctuates.
Lumo's PMax management is built around the levers that actually matter: high-quality audience signals (first-party customer lists, high-intent website visitor segments), asset group architecture (separate groups by product category, audience, and funnel stage), creative quality (platform-native assets for each Google surface), and negative keyword lists (preventing PMax from misappropriating brand traffic).
First-party audience signal setup — customer match lists, high-value website visitor segments, in-market audiences, and custom intent segments — giving Google's AI the right starting signals for faster learning.
Asset group design by product category, audience type, and funnel stage — with full creative asset sets (headlines, descriptions, images, logos, videos) for each group in correct dimensions and formats.
Performance Max creative production — responsive ad headlines and descriptions, lifestyle and product images in all required aspect ratios, and short-form video assets for YouTube and Discovery placements.
Brand campaign separation to prevent PMax from cannibalising branded search traffic, negative keyword list maintenance, placement exclusions for low-quality display inventory, and audience exclusion for existing customers.
Asset performance scoring, audience signal refinement, budget allocation between PMax and standard campaigns, conversion tracking audit, and weekly performance reporting with optimisation actions.
PMax coordination with existing Search, Shopping, and Display campaigns — ensuring PMax complements rather than cannibalises your campaign portfolio, with budget allocation across campaign types.
Review existing campaign structure, conversion tracking accuracy, audience list quality, and current PMax configuration — identifying conflicts, gaps, and optimisation opportunities before any changes.
PMax campaign setup with audience signals, asset group architecture, creative assets, brand exclusions, and conversion goals — with staging review before going live.
Campaign launch with monitoring through the learning phase (typically 2–4 weeks), daily performance checks, and early adjustments to asset groups and signals as performance data emerges.
Post-learning optimisation — asset group refinement, audience signal updates, budget scaling on profitable segments, and ongoing creative refresh to prevent asset fatigue.
Google's PMax learning phase typically lasts 4–6 weeks. During this period, the algorithm tests audience, creative, and placement combinations to find what converts. Performance may fluctuate during learning — it's normal to see inconsistent results before the algorithm settles. Lumo configures campaigns to minimise learning phase duration: strong audience signals, complete creative asset sets, and accurate conversion tracking accelerate the learning process.
Yes — PMax is designed to complement existing campaigns. Lumo establishes clear rules for campaign co-existence: Search campaigns for branded queries and high-intent exact match keywords, Shopping campaigns for product-level control, and PMax for incremental reach across Google's broader inventory. Without proper separation, PMax can cannibalise traffic from other campaigns — especially branded search — which is why exclusion management is critical.
Google provides limited search term visibility in PMax by design — it's part of the trade-off between automation and transparency. Google does provide a partial search terms report showing queries that generated significant conversions, but not the full query data available in Search campaigns. Lumo supplements limited PMax visibility with Google Analytics 4 landing page analysis, audience performance data, and asset group reports to diagnose and improve performance.
PMax works best for businesses with clear conversion events (purchases, lead form submissions, phone calls), sufficient conversion volume (50+ conversions/month recommended for smart bidding), and creative assets for multiple Google surfaces. It's most powerful for e-commerce (Shopping + Display + YouTube combination) and lead generation with good landing pages. Businesses with very narrow audiences, strict brand guidelines, or low conversion volume may benefit more from standard campaign types with more control.
PMax and Shopping campaigns compete for the same Shopping inventory. Google's policy is that PMax takes priority over standard Shopping campaigns when both are eligible for the same query. Many advertisers have found Shopping campaigns receiving significantly less traffic after launching PMax. Lumo manages this by using campaign priority settings, product-level segmentation between PMax and Shopping, and budget allocation to ensure Shopping campaigns retain the control and transparency that PMax can't provide.
Get a free Performance Max audit — we'll review your current PMax configuration, audience signals, asset quality, and campaign co-existence strategy, then show you what's holding back your performance.
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