What is macbook touchbar?

The MacBook Touch Bar is a thin, horizontal touchscreen strip located above the keyboard on MacBook Pro models. It replaces the traditional row of function keys and provides users with a customizable set of shortcut controls. The Touch Bar's controls change depending on the application that's being used, and users can use it to access various system functions, quickly switch between applications, and perform other tasks more efficiently. The Touch Bar is exclusive to certain MacBook Pro models and has been available since 2016. It has been praised for its versatility and innovation while some users prefer the traditional function keys.