SEO (Search Engine Optimization) is the practice of optimizing a website to improve its visibility on search engines like Google. By using techniques such as keyword research, content optimization, and backlink building, SEO helps websites rank higher in search engine results pages (SERPs). This increases organic traffic, making it easier for users to find relevant content. Effective SEO not only drives more visitors but also enhances user experience, making websites more accessible and engaging for both users and search engines.