The short answer

Performance Max management should include more than changing budgets and waiting for the algorithm. A proper service should cover tracking, conversion goals, feed quality, asset groups, audience signals, creative assets, product eligibility, budget control, landing pages, and reporting.

If PMax is a meaningful part of your media spend, management needs to be an operating system, not a monthly status update.

Core service areas

Area What should happen
Tracking Review conversion goals, values, duplication, and lead quality
Feed Improve product data, Merchant Center health, and custom labels
Structure Build campaigns and asset groups around useful commercial logic
Creative Test assets that match the product group or audience
Audiences Use customer lists, remarketing, and relevant search themes
Budget Move spend toward stronger products, services, or markets
Reporting Show what is working, what is wasting spend, and what changes next

The exact scope depends on ecommerce versus lead generation, but the principle is the same: PMax needs clean inputs.

Tracking and conversion goals

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The first management task is making sure PMax is optimising for the right outcomes.

For ecommerce, check:

For lead generation, check:

PMax cannot improve lead quality or profit if those signals never reach the account.

Feed and Merchant Center management

For ecommerce, feed quality is central.

Management should include:

If the agency manages PMax but never looks at Merchant Center, the service is incomplete.

Asset group management

Asset groups should reflect products, audiences, and creative themes that belong together.

Good management includes:

For a deeper process, see How to Set Up and Organise Performance Max Asset Groups.

Creative management

PMax can serve across many placements. Creative matters.

Review:

Creative should match the asset group. Generic creative across a mixed catalogue rarely gives the clearest signal.

Budget and bidding management

Budget management should be tied to commercial reality.

Ask:

PMax management is not simply increasing budget when ROAS looks good. It is understanding why the result looks good.

Reporting and diagnosis

Good reporting should answer:

If reporting only shows campaign-level ROAS, it hides too much.

What should happen every month

A useful monthly rhythm:

PMax should get calmer and clearer over time, not more mysterious.