#TheLastSEOAndWebDesign : #TestAB #Migration and #UX
SEO Split-Testing: How to A/B Test Changes for Google https://moz.com/blog/seo-split-testing-a-b-test-changes-google Site Redesign & Migration Tips To Avoid SEO & UX Disasters http://searchengineland.com/site-redesign-migration-tips-avoid-seo-ux-disasters-236768