What you need to know
A redesign changes URLs, content, links, and metadata. Search traffic may suffer if important pages disappear without replacements or redirects point to unrelated pages.
How to apply it
Export URLs, identify valuable pages, map changed URLs to relevant replacements, preserve content, update links, and test redirects and canonicals before launch.
Common mistake to avoid
Redirecting every retired URL to the homepage is rarely helpful. Send each old page to its closest replacement or remove it deliberately.