Link building is an important part of Search Engine Optimization process which plays a major role in the ranking of a website on search engine results. The leading search engine Google prefers natural link buildings techniques as opposed to paid links or exchange links. A link from a trustworthy and authoritative website will help you to achieve a high position on Google, Yahoo and Bing. You can evaluate the worth of links through popularity of the website, quality of the content and the age of the website. Some other tools which explain domain authority are: the number of ranked keywords, traffic to the website and the age of the domain. If you want your website to achieve and sustain a good rank on Google, then hire best link building services in India.