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What is a Subdomain?

A subdomain is a prefix that appears before the main domain in a URL. For example, blog.example.comstore.example.com, y support.example.com are subdomains of example.com.

Businesses and bloggers typically use subdomains to host content they do not want or cannot host on their main domain. This content is usually in a different format or intended for a separate audience from the one on the main domain. However, the business or blogger wants their visitors to know they own the site hosted on the subdomain. 

For example, a computer manufacturer with a site at example.com may host its support service at support.example.com. That way, the subdomain gives the support site enough credibility while preventing the brand from including unrelated user-generated content on its main site. 

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