What is url parameters ?
URL Parameters are parameters whose values are set dynamically in a page's URL, and can be accessed by its template and its data sources. This makes pages incredibly dynamic, enabling a single page to power an endless number of views.
URL parameters are those which are used to indicate how search engines should handle parts of your site based on your URLs. It helps in crawling your site more efficiently.
URL parameters are used to indicate how search engines should handle parts of your site based on your URLs, in order to crawl your site more efficiently. This refers to folders within a URL string, i.e. yoursite.com/folder-one/ or yousite.com/folder-two/, where folder one may have duplicate content to folder two or where the content in folder one should not be showing up in search results.