A Head of SEO is responsible for developing and executing a company's search engine optimization strategy to improve organic search visibility and drive website traffic. They lead SEO teams, analyze performance data, implement best practices, and collaborate with content, marketing, and development teams. Their role involves keyword research, technical SEO, link-building strategies, and staying updated on search engine algorithm changes. Ultimately, they aim to increase organic rankings, enhance user experience, and drive business growth through search channels.