There are multiple features. This particular one is about client-side scanning before upload to Apple's iCloud Photo service, which is optional to use.
Presumably it is client side so that they can do anonymization/encryption of photos on the server, and treat any data access outside the account and account they have shared the photo with as an audited and cross-organizational event.
But if you want to use another hosted service, you can... and likely get their implementation of a similar system. Presumably this is US regulatory compliance.
Presumably it is client side so that they can do anonymization/encryption of photos on the server, and treat any data access outside the account and account they have shared the photo with as an audited and cross-organizational event.
But if you want to use another hosted service, you can... and likely get their implementation of a similar system. Presumably this is US regulatory compliance.