In the majority of cases, a user will not have to type WWW to view your web address or domain. However, if youve implemented WWW to differentiate between subdomains, its important to ensure that your site is configured to provide the appropriate redirects to users.
For some websites, the addition of the WWW in www.example.com may cause a redirect to example.com. For others, it may be two separate pages on the same domain. Your web hosting provider should be able to help you set up to ensure the correct redirects are in place.