Modular function deployment

Modular function deployment is a way of making sure your computer programs are working properly. It involves breaking the program down into small parts, called modules, and seeing if each of these modules works correctly. Each module can be tested separately, so if something goes wrong it is easier to find out which module is not working and fix it. Once all the modules are working properly, then the program as a whole can be tested. This makes programs more reliable and easier to maintain.