A lot of people or businesses need to copy CDs. Whether it is for personal or business reasons, having a company copy those CDs is a great time saver. There are two ways to make a copy of a CD. These two processes are known as replication or duplication. You want to make sure to understand the difference in replicating or duplicating a CD because this determines which process is best for your project. There is also a difference in the final product and packaging.