What is the name given to software that provides the interface between the os and computer hardware?

Im doing this last minute and literally none of my neighbors or people that my dad works with use excel so if anyone could me make up an example

What is a programming method that provides for interactive modules to a website?

A(n) is a step-by-step direction for performing a specific task, which is written in a language the computer can understand. servercachearrayprogram