Guest blogging is carried out to get more organic traffic . That is why guest blogging is essential to SEO. Once the blog becomes popular and is followed by traffic that will land on your website. Every genuine backlink will take them to the first page of of the search results, which means your websites will be more prominent on the SERPs which will result in an increase in organic visitors. If more backlinks are created from guest blog content, Google and other search engines will judge your content to have significance and worth, thus increasing the credibility of your content.