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Measurement & Tracking
Consent mode is a Google framework that adjusts how Google tags behave based on the user's consent choices, sending cookieless pings when consent is denied so Google can model conversions that are not directly observed.
Under privacy regulation, a user who declines cookies cannot be tracked in the normal way. Without consent mode the tag simply does not fire and the conversion is lost. With consent mode the tag still sends a minimal, cookieless signal, and Google uses aggregate patterns from consenting users to model how many conversions the declining group likely produced. Those modeled conversions appear in reporting and feed bidding.
Version 2 added two parameters, ad user data and ad personalization, which are required for audience and remarketing features to work for users in the European Economic Area, and effectively required to keep measurement functioning there.
Implementation is usually a consent management platform integrated with Google Tag Manager, with default consent states set before any tag loads. The audit question is simple: open the site with a fresh browser, deny consent, and check whether the consent state updates and the modeled signal is sent. Many sites we review have a banner and no working consent mode behind it.
Why it matters
It keeps measurement and bidding functional for users who decline tracking, and it is required for remarketing in regulated regions.
RELATED TERMS
Enhanced Conversions
Enhanced conversions is a Google Ads feature that sends hashed first-party customer data (email, phone, address) with a conversion event so Google can match conversions to ad interactions that cookies alone would miss.
Google Tag Manager (GTM)
Google Tag Manager is a free tag management system that deploys and controls marketing and analytics tags on a website from a single container without editing site code for each change.
GA4 Key Events
Key events are the events in Google Analytics 4 that you mark as important business outcomes; they replaced the term conversions in GA4 and can be imported into Google Ads as conversion actions.
Written by Ilya Bulychev, Founder, Live PPC Ads. Part of the PPC Glossary.
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