An important part of improving a website's ranking is having mentions on other websites for your website. As that has been known to boost rankings and this is where guest posts come in. Guest posts allow websites to get a mention from other websites which leads to an increase in credibility thus improved SEO ranking. Guest posts have been proven to improve traffic as well as SEO in the long run. They are also a way to tap into the website’s audience and discover new demographics which could be targeted to something which wasn’t happening on their own website.