Data helps show how people find and use a website through search engines. Search data like keywords shows what words people type when looking for answers online. Page data shows which pages get visits and which ones people leave quickly. When a page has many visits but little action, the content may not answer the question well. Data also shows which topics bring steady traffic over time. Using this information helps improve pages, add clearer content, and fix weak areas. How should beginners decide which data matters most for SEO work?