Search Engine Optimization (SEO) is the practice of optimizing a website or online content to improve its visibility and ranking on search engine results pages (SERPs). It involves a combination of techniques, including keyword research, on-page optimization, content creation, and backlink building, to enhance a website's relevance and authority in the eyes of search engines like Google. By optimizing for SEO, businesses and website owners aim to attract more organic (non-paid) traffic, increase their online presence, and ultimately drive more qualified leads and customers to their websites. SEO is a vital digital marketing strategy for improving online visibility and achieving long-term success.