Software is a set of instructions that tell a computer what to do. It can be as simple as a single line of code or as complex as an operating system. Software is written in various programming languages, such as C++ or Java.

There are many distinct types of software, ranging from applications that allow us to perform specific tasks, such as word processing or image editing, to more general-purpose systems like Windows or macOS. Some software is designed for specific platforms, such as mobile devices or video game consoles, while others can be used on any type of computer.

While most software is created with the intention of being used by people, there are also some programs that are designed to run without any human interaction. These include things like server software and automated security systems.