The UK's Competition and Markets Authority (CMA) has officially cleared Google's Privacy Sandbox initiative, which is set to replace third-party cookies in the Chrome browser. The decision, announced on October 17, 2025, removes the competition concerns the regulator had previously raised. This approval is a significant milestone for Google's advertising business, as it allows the company to move forward with its new set of tools for interest-based advertising without the use of individual tracking cookies. Alphabet, Google's parent company, derives the vast majority of its revenue from Google's advertising services. The Privacy Sandbox is Google's answer to growing privacy demands while aiming to maintain a healthy ecosystem for online advertising.