A Guest Blog is a blog article written for another website. Usually, the author of the blog post is seeking to reach a new audience on the blog or get a message to that audience on a hot topic.

As a marketing tactic, a guest blog can be an effective way to get a brand or individual in front of a new audience. It can also be a method for gaining a backlink, since  most guest bloggers are not paid and receive a link to their own website in return for creating the content.