Issue
Google has announced plans to phase out support for third-party cookies on its Chrome browser.
Background
The company will not be building new technology to support user tracking on its browser, once the cookies are phased out.
Details
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The decision will have a significant impact on digital advertising given that Chrome is the most popular browser across the world.
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It also signals shift in Google’s approach, which is pitching itself as more privacy-centric.
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It should be noted that Apple’s Safari browser and Mozilla’s Firefox are already blocking all third-party cookies.
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Third-party cookies help websites and advertisers track user behaviour on the web. They are later used to serve user preference targeted ads.
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Once Google phases them out, it will become harder to push targeted ads and this will impact both the effectiveness and pricing of ads.
Alternative mechanism
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Google’s web products will be powered by privacy-preserving APIs which prevent individual tracking while still delivering results for advertisers and publishers.
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Google is proposing a new approach called Federated Learning of Cohorts or FLoC which aims to track clusters of people with similar interests, instead of individuals.
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Google will continue to support first-party relationships on its ad platforms for partners, in which they have direct connections with their own customers.
Cookies
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Cookies are text files with small pieces of data that are used to identify your computer as you use a computer network.
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Specific cookies known as HTTP cookies are used to identify specific users and improve your web browsing experience.