Many people experience benefits from having a subdomain. For example,subdomains will improve your search ranking. Search engines recognize subdomains as completely separate web addresses from your main domain. So, you can use your subdomain to get new traffic. Essentially, you’ll have two sites working together to sell your product. Also you can create a subdomain optimized for mobile devices.
A domain name is your website name. It is the address where Internet users can access your website. A domain name can be any combination of letters and numbers, and it can be used in combination of the various domain name extensions, such as .com, .org, .edu and more.
When you register your new domain, you can register it for one to 10 years. After expiration, most domain names have a redemption period. This period can last from two weeks to 30 days, and, during this time, the current registrant can renew the domain name by paying domain name's renewal fee.