Guest posting is a great way to get backlinks, both the blog and the author may benefit of this tactic: the first gets fresh content, the other can reach to an already established audience and get a back-link.
Guest posting in Spanish Speaking countries may not be the same as in English or any other languages. Each blog has its own set of rules and requirements, normally they tend to have a high-quality standard, but lower traffic.
Guest posts in Spanish are free, different from the Sponsored posts that may charge the business a fee for being published.
See this Guest Post that we wrote for a client some weeks ago in a very well known Colombian Blog:
More than 20 years of experience working with digital marketing, blogging, content writing and advertising. Sometimes a writer, sometimes a wizard, and many times a business builder.