Use Subdomains to increase SEO
Not many people know exactly how the search engines treat the subdomains when it comes to website building and SEO. Research has been done, and the theoretic conclusion is that search engines handle subdomains as totally different domains.
That's why the use of subdomains should be handled with care and knowledge, during the website design process. They can be used to help in page ranking, but they also can damage the SEO for the main website.
Let's see how: