MIG, or Metal Inert Gas welding, is a process used to join metals together using a continuous wire electrode and an inert gas, such as argon or helium, to protect the weld from contamination. This method is popular in various industries due to its speed and versatility, making it suitable for welding thin and thick materials alike. The MIG welding process involves feeding the wire electrode through a welding gun, where it melts and fuses the base metals. It is commonly used in automotive, construction, and manufacturing sectors, providing strong and clean welds with minimal cleanup required after the process.