The instances follow the update to iOS 16.3 which made security changes to enable physical security keys to be used to secure accounts and expanding Advanced Data Protection outside of the US.
The latest update brings support for ProRes video as well as ProRAW photos. It also now supports strong password generation with the iCloud Passwords app, reports MacRumors.
According to Apple's system dashboard, iCloud Photos, Drive, Mail, Notes, Contacts, Find My, and Backups were few of the services that suffered issues late on Wednesday.