There are "content" driven websites which are things like blogs, marketing / brochure style sites, documentation sites, etc. They are driven by content that is

There are "content" driven websites which are things like blogs, marketing / brochure style sites, documentation sites, etc. They are driven by content that is authored by the website owners that can then be cached or is not frequently updated by end users or external data. Then there are sites that are more application driven or service driven. Stuff like a messaging client, social media, streaming service, eCommerce, or other full on interactive web app. They tend to be more data driven or dependent on end users, and less static content. That is frequently how the word content is used in the context of web development. You might have heard of a CMS or content management system. It's not the same as someone using the word content like social media "content creator".