Claire Robinson-Ayres discusses the evolution of SEO, highlighting the shift from outdated techniques focused on keyword manipulation and link building to a user-centric approach prioritizing quality content and user experience. Key changes include algorithm updates like Panda, Penguin, and Hummingbird, which penalized low-quality practices and emphasized semantic search and usability. Today's SEO involves integrating digital marketing strategies, understanding metrics, and focusing on genuine engagement rather than just ranking positions.