What is the best URL structure?
Keep it short and simple. Good URLs are short and to the point. Make sure you aren't filling yours with any unnecessary words or characters, and avoid keyword stuffing. Having the same keyword in your URL more than once won't do you any good.
What are SEO friendly URLs?
What are SEO friendly URLs? SEO friendly URLs are URLs that are designed to meet the needs of users and searchers. Specifically, URLs optimized for SEO tend to be short and keyword-rich.
Does the URL matter for SEO?
In short— the length of a URL could affect the appearance of search snippets, but does not affect search rankings. “This does not affect ranking. It's purely a matter of which URL is shown in search. So, to sum up, when it comes to search rankings, neither the URL length nor the number of slashes matter.