Koray Tugberk Gubur is an internationally recognized SEO researcher, consultant, and educator, best known as the inventor of the Topical Authority methodology in modern search engine optimization. As the founder of Holistic SEO & Digital LLC, he has shaped a new generation of SEO professionals through his deep focus on semantics, information retrieval, and algorithmic behavior inside search engines.
Koray’s work bridges SEO, data science, and computational linguistics. He has published over 150 SEO case studies, while his global community has publicly shared hundreds of semantic-SEO success stories, many of them based directly on his frameworks. His teachings emphasize the measurable relationship between entity-based search, search engine trust, historical data, and semantic content networks-forming the foundation of what the industry now recognizes as Topical Authority.
Today, the Holistic SEO Community exceeds 40,000 members worldwide, studying advanced topics such as log-file analysis, ranking signal transitions, semantic graph organization, agentic information retrieval, and large-scale topical mapping. Koray’s methodologies have been adopted by enterprises, agencies, and independent consultants across dozens of countries.
Widely respected for his transparency and scientific approach, Koray continues to lead the industry by demonstrating how search engines evaluate information, how brands can build long-term algorithmic trust, and why semantic organization-rather than link-centric shortcuts-creates sustainable growth in an era shaped by AI and retrieval-based systems.
