beginnerGeneral
WWW (World Wide Web)
The classic subdomain prefix for websites — "www.example.com" — still common but optional today.
WWW is the subdomain prefix historically used before domain names (www.example.com) to indicate the website hosted on the web. While "www" remains common, most modern websites work with or without it (using DNS CNAME or ALIAS records to redirect the apex domain). "Non-www" (naked domain) setups are now equally accepted and often preferred for cleaner URLs. The choice has no significant SEO impact.