EDK II (EFI Development Kit II) is an open-source development environment for creating UEFI (Unified Extensible Firmware Interface) applications, drivers, and firmware modules. Maintained by the TianoCore community, EDK II provides tools, libraries, and sample code to help developers build and customize firmware for a variety of hardware platforms. It supports modern firmware features such as secure boot, network boot, and advanced power management. EDK II is widely used by hardware vendors and system integrators to develop, test, and deploy UEFI-compliant firmware, ensuring compatibility and security across diverse computing environments. Its modular architecture allows for rapid prototyping and integration of new technologies.