Koray Tuğberk GÜBÜR is the founder and CEO of Holistic SEO & Digital and one of the most recognized practitioners in Semantic SEO, Topical Authority, and advanced search engine optimization.

His work combines SEO with data science, machine learning, web development, information retrieval, entity-based search, and semantic content networks. Rather than treating SEO as a collection of isolated tactics, Koray focuses on understanding how search engines interpret information, entities, context, relevance, and authority across an entire website.

He is particularly known for his work around Topical Authority and Semantic SEO, using large-scale content architectures and carefully structured information networks to build organic visibility without relying solely on traditional link-building strategies. His methodologies have become widely discussed and studied within the international SEO community.

Koray regularly conducts and publishes SEO experiments, case studies, research, and detailed A/B tests designed to better understand the behavior of search engines including Google, Bing, and Yandex.

As an international speaker and educator, he brings a deeply technical and research-driven perspective to SEO, challenging practitioners to look beyond rankings and keywords and instead understand the systems, algorithms, semantics, and information structures that influence how modern search engines work.