CD replication and duplication are two different processes that can easily confuse anyone. In the CD replication process, a CD is created by molding the disc from a stamper to make an exact copy of the master copy. Once this process is completed, it is difficult to add new data. Alternatively, CD duplication refers to burning data onto a disc and is generally carried out with the help of consumer technology.The CD duplication process is generally carried out with a device called a writer or burner. If you have a burner or writer device installed in your computer, you can do CD duplication at home. CD duplication at home is both convenient and inexpensive. However, to get the best results and if you need many copies, you should choose professional duplication services.Many people have different needs for duplication. If you want to create a few copies of your data, CD duplication is appropriate. However, for orders of more than around 500 copies, CD replication is the best process to go for. Replication can also include packaging and art that will offer a professional look to your CDs.In the CD replication process, the original master disc is generally used to create a glass master which consecutively allows the creation of a set of stampers. High-tech injection molding then creates a replica of this master.