DNS management is all about gaining control over the various functions of your domain name.
If you've ever dealt with the management of your domain, you know that with other registrars, it can be a difficult and lengthy process.
The smallest change, from changing your email address in your contact information, or altering the nameservers of your host, can require multiple, confusing emails.
Many domain name registrars now provide you with the ability to actually make the changes that you need to make without seeking the permission of your web hosting provider. Other companies can also provide DNS management service that are even independent of the domain registrar.