Search Engine Optimization (SEO) is the practice of enhancing a website's visibility and ranking on search engine results pages (SERPs) through a combination of techniques and strategies. This involves optimizing content, improving website structure, and using relevant keywords to attract organic traffic from search engines like Google. SEO encompasses both on-page elements, such as meta tags, headlines, and internal linking, and off-page factors like backlinks and social media engagement. Effective SEO helps businesses reach their target audience, increase online presence, and ultimately drive more traffic and conversions, making it a crucial component of digital marketing strategies.