Increases domain authority
Domain authority is a measure of how trustworthy a source your website is deemed by the search engines and is scored from 0-100. So, for example, the websites of government bodies, large corporates and public sector organisations like the BBC and NHS will have high ratings. A newly created website will have a relatively low domain authority as the search engines have no historic information with which to judge it by. However, if you can obtain backlinks from websites with high domain authority, their trustworthy status will be in part conveyed through to your site, leading in time to an increase in your domain authority rating.
Improves SERP rankings
Having a high domain authority rating is an important part of SEO as it is a contributing factor in how Google and other search engines rank their web pages within the SERPs (search engine results page). The higher your domain authority, the better your web pages will rank within the SERPs. Websites that score above 60 have a higher chance of ranking higher, and those with less than 30 will rank lower in SERPs. In this way gaining quality backlinks helps your webpage to be indexed much quicker than via content optimisation alone.
Boosts referral traffic
Referral traffic is the term used to describe website visits you receive from other websites, without visitors searching for you on Google. For this to happen they need to click on a backlink and be redirected through to your website. Visitors who find your site in this way will have a strong propensity to view your business as credible if it is linked to a high-profile brand they already trust.