The document provides a detailed checklist for SEO best practices when conducting a website migration. It outlines numerous steps to take during pre-migration planning such as conducting content inventories, setting key performance indicators, and establishing analytics and technical baselines. It also lists critical steps for go-live including verifying domain preferences, checking server logs and CDNs, and submitting sitemaps. Post-migration activities include monitoring redirects and ongoing site defense. The comprehensive checklist is intended to help SEOs effectively plan and execute a migration while minimizing negative impacts to organic traffic.