APFS (Apple File System)

Apple File System (APFS) is a file system that's used for encryption, data storage, and file sharing on Apple devices:

Encryption

APFS uses advanced encryption technology to protect data from unauthorized access.

Data storage

APFS is optimized for solid-state drives (SSDs) used in most modern Mac computers. APFS allocates storage space on demand and can share space between multiple volumes within a container.

File sharing

APFS allows users to duplicate files instantaneously, so the duplicate doesn't take up more storage space.

APFS is the default file system for Mac computers running macOS 10.13 or later. It is also used on iOS, tvOS, and watchOS. APFS is generally considered the better choice for Mac users, but exFAT might be more suitable if you need to share files with Windows computers.