Mind mapping in SEO (Search Engine Optimization) is a visual technique used to organize and connect ideas, keywords, and content in a strategic manner to improve website ranking and increase online visibility. It involves creating a diagram or map that visually represents the relationships between different elements, allowing for a more comprehensive and structured approach to optimizing a website for search engines. By utilizing mind mapping in SEO, businesses can effectively plan and execute their SEO strategies, leading to higher search engine rankings and ultimately, increased website traffic and conversions.