Why do computers need UEFI?

Computers need UEFI (Unified Extensible Firmware Interface) because it serves as a modern replacement for the traditional BiOS, offering enhanced features such as faster boot times, support for larger hard drives, and improved security measures like Secure Boot. UEFI allows for a graphical user interface and more flexible system configuration options, making it easier for users and developers to manage hardware settings. Additionally, it supports 64-bit architectures, enabling better performance and compatibility with contemporary operating systems.