This case uses search, behaviour and enquiry measures to evaluate a redesign rather than judging only the refreshed appearance.
Save a reliable baseline before launch
Record search impressions, organic visits, primary actions and completed forms for important pages. Without a baseline, real change is difficult to identify.
Review different signals in sequence
Check technical errors and key journeys first, then indexing and search, and finally enquiry volume and quality. Trace unexpected movement back to specific pages.