The technologies Google is discontinuing are: Attribution Reporting API for both Chrome and Android, IP Protection, Protected Audience API for Chrome and Android, Protected App Signals, On Device Personalization, Related Website Sets, Private Aggregation (including Shared Storage), Select URL, SDK Runtime and Topics for both Chrome and Android.
It is unlikely that the Privacy Sandbox decision will have a marked effect on Google’s dominance of the browser market. Chrome had a 72-percent share of the browser market in September, according to Statcounter. However, it looks likely that Google’s attempts to incorporate Privacy Sandbox technologies in future web standards will be discontinued. As Malik said “Standardisation is possible, but only where there’s multi‑stakeholder legitimacy. Without broad buy‑in from browsers, regulators, and publishers, “web standards” risk looking like vendor standards.”
What is not clear is what will happen to those companies that have been implementing Privacy Sandbox technologies within their own organizations.