DMG
DMG (Disk Image) is a file format used primarily on macOS for distributing software, storing disk images, and creating bootable media. It functions as a virtual disk that can be mounted like a physical drive, allowing users to install applications or access files by opening the image. DMG files often include compression and encryption features, making them a standard method for software distribution on Apple's operating system.
Developers should learn about DMG when creating or distributing macOS applications, as it is the standard format for packaging software installers on the platform. It is essential for ensuring compatibility, security (through signing and encryption), and user-friendly installation experiences. Use cases include bundling apps with resources, creating disk backups, or setting up bootable drives for system recovery or testing.