What is a can light and how is it used in interior lighting design?

A can light, also known as a recessed light, is a type of light fixture that is installed into the ceiling, with the light bulb recessed inside a metal canister. It is used in interior lighting design to provide ambient lighting in a room without taking up space or being visually obtrusive. Can lights can be used to illuminate specific areas or to provide overall lighting in a room, creating a clean and modern look.