Google Ads - Similar Audiences Will Stay the Same until 2023

If you're using similar audiences in your Google Ads campaigns, there's no need to worry—they'll stay the same until 2023, when Google plans to phase out the feature. According to a Google Ads representative, this is due to the evolving landscape of online marketing, as well as increasing privacy concerns. Google will stop using similar audiences to target ads at users on November 1, 2022. They initially said they would not provide an alternative to third-party cookies, but they realized that some form of user targeting is needed for advertisers to effectively market their products and services. If they hadn't provided an alternative, advertisers would have moved away from Google, which would have had a major impact on their advertising revenue. Some people on Twitter were quick to ask for more information about how Google will merge similar audiences with other targeting options. It's not clear yet if similar audience targeting will be available as a standalone option, but there are other automated targeting solutions that use similar signals.

(source: https://www.searchenginejournal.com/google-announces-sunset-of-similar-audiences/470017/)