In every project I take on, from a complete site, to a review of a web site’s content, there's:
At every stage in the process there’s a feedback and testing.
This means both referring back to research and analysis documents as well as testing with either clients or colleagues and potential users (often called UAT).
This feedback
To create a web site that is usable, with pages that can be read.
This means that the people who use the site with a purpose in mind can find the information they want or achieve what they had intended to.