You could also see it as a goal focused towards the quality and maintainability of the codebase, properly defined and communicated tasks, CI- and QA-processes e

You could also see it as a goal focused towards the quality and maintainability of the codebase, properly defined and communicated tasks, CI- and QA-processes etc. that make it possible. There's nothing inherently different between a website and "real" software that makes being agile (which this is really about) more possible on websites.