The feature requires developers to indicate their website cookies' SameSite attribute, which dictates how those small files a browser saves should behave. If they don't, then Google will automatically switch that attribute to a secure option that prevents cookies from tracking users across websites. However, the change can break products and services that need cross-site tracking to work.
Google says most developers were prepared for the change -- it was first revealed in mid-2019, after all. But the company still decided to roll back its enforcement, because it wants to ensure that websites providing essential services, such as banking, online groceries, government services and healthcare, continue to be accessible in these difficult times. The tech giant will start the rollback today and promises to announce when it plans to resume its enforcement on the SameSite updates page.