What Are Sub Domains

You can divide your domain into many sub domains based on your requirement. If you are doing multiple business using the same domain then its worth to use sub domain for every business. Following are examples of sub domains

You must have seen http://www.google.com as a main domain but google has created many subdomains based on their business. Few of them are as follows:

http://adwords.google.com - This sub domain is being used for Google Adwords.

http://groups.google.com - This sub domain is being used for Google Groups.

http://images.google.com - This sub domain is being used for Google Images.

http://analytics.google.com - This sub domain is being used for Google analytic ( Stats ).