We often encounter sites with category and tag structures which are completely unmanaged. Even large news sites can suffer from over usage of tags and categories. Tags and categories are both examples of a taxonomy system. When used correctly, a good taxonomy system can boost your site’s SEO. The opposite is also true: when used wrong, it’ll break things. This article dives into why those pages are so important and how to use them. We’ll use category archives as our prime example.
Your category archives are essential for SEO. In fact, especially for eCommerce sites, they can be more important than individual pages and posts. Those archives should be the first result in the search engines; they’re landing pages. They should therefore also provide the best user experience.
>> Read : Using category and tag pages for SEO
Source : Yoast