Universal Binaries
Universal Binaries are executable files that contain code for multiple CPU architectures, allowing a single application to run natively on different types of Apple hardware without recompilation. They were introduced by Apple to ease the transition between PowerPC and Intel processors, and later for Apple Silicon (ARM-based) Macs. This packaging format bundles separate binary slices for each target architecture into one file, with the operating system selecting the appropriate version at runtime.
Developers should use Universal Binaries when creating macOS or iOS applications that need to support multiple Apple hardware architectures, such as distributing a single app for both Intel-based and Apple Silicon Macs. This is crucial for ensuring broad compatibility and a seamless user experience during hardware transitions, as it eliminates the need for users to download separate versions or rely on emulation layers like Rosetta.