Guest Post (Guest Posting)
A guest post is an article that a company or specialist writes for another website or publication, usually one that is topically relevant and well regarded, normally with an author credit and often with a backlink, in exchange for visibility with that audience.
In practice
Choosing genuinely relevant, well-regarded publications rather than sheer volume of guest posts matters both for real reach with the right audience and for avoiding questionable link networks that breach search engine guidelines. A good guest post gives the host publication real value, not just a placed link.