A guest blog is a blog post that’s written by someone other than the regular blog author, or someone who doesn’t work for the company publishing the blog. This guest will generally be invited or allowed to write a post due to their insight on a specific topic or industry, and this topic should usually be one that the readers of the company’s blog will relate to or have some interest in.
Guest blogs are great for bringing a new perspective to a topic, increasing blog traffic, expanding the blog’s audience, and even gaining backlinks.