Bluetooth is a wireless technology that allows short-range communication between compatible devices without wires or cables. It was developed in 1989 originally for wireless headsets. Bluetooth technology connects devices like wireless headphones, fitness trackers, smart home devices, and more. It has evolved through several versions with improvements in speed, range and security. While Bluetooth provides wireless connectivity and compatibility, it also has limitations like short range, potential interference and lower data transfer speeds compared to WiFi. Overall, Bluetooth is a popular wireless standard that enables communication across a variety of devices and applications.