https://techcrunch.com/2021/06/07/apple-refines-ios-15-notifications-with-focus-summary-features/

As part of the update to iOS 15, Apple will allow iPhone users to better customize how they want to be notified about incoming calls, texts or updates from apps based on their current status. With the new Focus feature instead of just silencing calls and notifications through Do Not Disturb, you’ll be able to set different types of notification preferences based on your status — like whether you’re driving, working, sleeping or through the use of custom categories of your own choosing.

The system also uses on-board AI to help determine what your status is at a given time. For example, the phone might suggest you turn off notifications when you’re arriving at the gym.