Linux is an operating system, just like Windows or macOS, that controls how your computer works and runs programs. Linux is known for being very well-supported hosting server that is secure, reliable, and flexible. Linux is different from other operating systems because it’s open source. This means that anyone can download, change, and share the code that makes it work. Because of this, there are many versions (also called “distributions”) of Linux, like Ubuntu, CentOS, and Debian, each with their own unique features.