Class-based programming is a way of writing computer programs. Basically, it means a programmer organizes their code into classes that contain variables and functions called methods. Variables represent data and methods are like instructions for the computer. Each class has a specific job or purpose. Then, when you want something done in your program, you just put everything in the right class and tell it to go. So, it's like breaking down your computer program into separate parts and giving the computer specific instructions on how to handle those parts. It makes it easier to understand, update or troubleshoot problems in your program.