There are many reasons why a company might want to use CD and DVD duplication services. For one thing, promotional CDs and DVDs can be a great marketing tool. While other companies are sending out flyers and coupons that are most likely just going to be thrown away, the company sending their potential customers a CD or a DVD is sure to stand out.
The most obvious promotional uses of CDs and DVDs are in the entertainment industry. Let's say you're a music producer who wants to promote a new album. You can send CDs with sample tracks to radio stations, music magazines and websites, and anyone else you can think of with the power to get the word out. Similarly, if you're a film producer trying to generate award season buzz, you can send "screener" DVDs or Blu-Rays to all the people with the power to vote for your film, to make it easier for them to see it, and declare it the year's best picture.
Whatever field you're in, be it education, entertainment, sales, marketing, or any number of others, the best way to convey a visual message is with a DVD or Blu-Ray, and the best way to convey an audio message is with a CD. And whatever content you have, if you want to convey it to a large number of people, you'll need to use a good DVD and CD duplication service.