Google CSS

What a Comparison Shopping Service is, where the roughly 20 percent cost advantage comes from, and how a merchant actually moves.

A Comparison Shopping Service is the least understood lever in European Google Shopping. It changes nothing about your campaigns, your bids, your feed or your landing pages, and it changes what every one of your clicks costs. This chapter explains the mechanism rather than the pitch.

In this chapter

What a Comparison Shopping Service is The EU ruling that created the CSS programme, and what a CSS actually does on your behalf.
The 20 percent CPC advantage Where the discount is applied, what it is worth in a real account, and which campaign types it reaches.
Where CSS is available The 32 countries the programme covers, and what merchants outside them can and cannot do.
Switching your Merchant Center The association request step by step, and the three things to check afterwards.
The EU antitrust ruling The €2.42bn decision, the remedy it imposed, and why the advantage is durable.
Choosing a CSS partner A hundred partners, one identical discount. What is actually left to compare.
Running two CSS partners at once Split-testing providers without breaking the one-product-one-CSS rule.
Free product listings The unpaid surfaces, what a feed needs to reach them, and where AI shopping fits.
CSS for agencies Running CSS across a client base: onboarding, reporting, billing and pricing.

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