Structure and content choices.
WHERE IT HELPS
Deciding what pages a site needs Structuring navigation Writing the content Reviewing for clarity and accessibility
FOR PLANNING
"I run [business]. Customers need to [what]. What pages should my site have, and what should each cover?"
Useful as a starting structure.
FOR NAVIGATION
"Here are my pages. How should the navigation be organised? What should be in the main menu?"
FOR ACCESSIBILITY REVIEW
"Review this page for accessibility: contrast, keyboard access, labels, heading structure."
Genuinely useful, and verify against the actual guidelines.
FOR CONTENT REVIEW
"Read this page as a customer deciding whether to buy. What is unclear? What question does it not answer?"
That question is worth asking about every page.
WHAT IT CANNOT DO
Design Know what your customers respond to Replace testing with actual visitors