Last year, as a result of growing concerns about privacy, Google announced that it will discontinue support of third-party cookies by Chrome browser. Today, Google made it clear that once phased out it will not replace third-party cookies with alternative user-level tracking.
As stated on its Ads and Commerce Blog:
“Today, we’re making explicit that once third-party cookies are phased out, we will not build alternate identifiers to track individuals as they browse across the web, nor will we use them in our products.”
The blog can be accessed here: https://blog.google/products/ads-commerce/a-more-privacy-first-web.
As a replacement, Google is building Privacy Sandbox which it claims will protect user anonymity while still supporting the needs of advertisers and publishers.