The document presents a comprehensive overview of Search Engine Optimization (SEO), outlining its definition, types (on-page, off-page, and technical SEO), and the methods employed to enhance a website's visibility in search engines. It discusses the workings of search engines, advantages and disadvantages of SEO, and technical elements like sitemaps and canonical tags. Additionally, it touches on email marketing, content marketing, and pay-per-click advertising, emphasizing the importance of digital marketing strategies for business competitiveness.