In academic organisations and in business, CDs and DVDs are used for sharing and circulating important data. In the commercial sector, CDs and DVDs are used for marketing and publicity.In all these cases the number of CDs and DVDs required is generally more than 500 in number. The best method for creating new CDs and DVDs in these quantities is through CD or DVD replication.Replication is an automated method where sophisticated technology is used for creating new CDs and DVDs, each of which are unique. Unlike CD or DVD duplication, replication does not copy the data to a blank CD but creates new CDs by embedding the data.CD replication thus offers CDs and DVDs which are qualitatively superior to duplicated CDs and DVDs and cannot be easily distinguished from originals. Apart from this, CD replication also offers numerous benefits like fast delivery and economical pricing. Moreover, companies that offer CD replication services also offer CD and DVD packaging services in order to provide a finished appearance to the replicated CDs and DVDs.All these factors have made replication immensely popular in the commercial and professional sectors. In the private sector, however, CD duplication is still preferred, since CD/DVD replication is useful only when the demand is more than 500 in number.