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Google CSS (Comparison Shopping Service) is a European Union programme that allows certified CSS partners to serve Shopping ads on Google on behalf of merchants — typically at a lower cost per click than campaigns run directly through Google’s own Shopping surfaces. Hellenic Technologies is a certified Google CSS Partner, providing e-commerce clients with a structural CPC advantage in their Shopping campaigns. The CSS arbitrage benefit arises from the EU’s regulatory requirement that Google auction Shopping ads from all CSS providers on equal terms. CSS partners receive a portion of the margin that Google would otherwise retain when merchants bid directly, which translates into lower effective CPCs for the same ad placement — or, equivalently, greater reach for the same budget. For e-commerce businesses operating in Europe, running Shopping campaigns through a CSS partner rather than Google Merchant Center directly is a straightforward efficiency gain with no change to campaign management, ad formats, or customer experience. What Google CSS partnership delivers for e-commerce clients:
  • Structural CPC reduction — Lower effective cost per click on Shopping placements compared with direct Google Merchant Center campaigns
  • No compromise on placement — Same Shopping ad positions, same formats, same customer experience
  • Seamless migration — Transition from existing Google Shopping campaigns to CSS with minimal disruption
  • CSS arbitrage benefit — Regulatory-derived margin returned to clients as reduced media cost
  • Combined with Google Ads expertise — CSS advantage combined with Premier Partner campaign management
  • Feed management — Product feed optimisation and merchant centre management as part of CSS service
  • Applicable markets — Available for all EU/EEA market Shopping campaigns