WiMAX is a telecommunications protocol that provides fixed and mobile broadband internet access. It aims to build metropolitan area networks with high bit rates and global range. WiMAX uses technologies like orthogonal frequency-division multiplexing (OFDM) and supports features such as multipath, broadband access, high data rates, reliability, and time-division duplexing (TDD) and frequency-division duplexing (FDD). Potential applications of WiMAX include residential internet access, business connectivity, cellular backhaul, and public WiFi hotspots.