On the other hand, subfolders, also known as subdirectories, are located under the main domain, such as this Career Advice section from Monster.com (https://www.monster.co.uk/career-advice/).
Subfolders are straightforward and can be easy to navigate to since they are hosted under a folder on the main website as opposed to a different domain.
This could look like a section of the site that is accessible from the navigation menu such as the Career Advice section on Monster.co.uk.
However, URL structure is not necessarily the primary driver for SEO benefits when comparing the difference between a subdomain and subfolder. Rather, the advantages of housing content under a subfolder come from increased opportunities for internal linking and keyword rankings, as well as improved site architecture and technical health.