SEO (Search Engine Optimization) is the practice of optimizing websites to improve their visibility on search engine results pages (SERPs). It involves techniques like keyword research, on-page optimization, creating high-quality content, and building backlinks. The goal is to increase organic traffic by making a site more appealing to both search engines and users. Effective SEO improves rankings, drives targeted traffic, and enhances user experience. It encompasses technical aspects like site speed and mobile-friendliness, as well as strategies for local and global audiences. A strong SEO strategy is essential for businesses seeking long-term growth and better online visibility.