 Macintosh operating systems development

Macintosh operating systems development refers to the process of creating, evolving, and maintaining the macOS (formerly known as Mac OS X and OS X) operating system used by Apple's line of Macintosh computers. This development encompasses various aspects, including architecture, design, features, user interface, performance optimization, security, and application compatibility. ### Historical Context: 1. **Early Beginnings (1984)**: The original Macintosh operating system was launched alongside the first Macintosh computer in 1984.