Object-oriented analysis and design is a way to make things-- like computer programs, websites, and other digital systems. It's like planning what goes into the things you make, like furniture or a house. You plan the shape and size of the project and make sure it will have the right parts. With object-oriented analysis and design, you plan the different parts of a project and make sure they will work together. You also decide how your project will look and feel. Then, you put the pieces together into a finished product that works best for you.