SEO(검색 엔진 최적화) is the practice of improving a website's visibility on search engines like Google and Bing. By optimizing content, structure, and technical aspects, websites can rank higher in search results, making it easier for users to find them. Key components of SEO include keyword research, on-page optimization, and link building. Keywords are specific terms users search for, while on-page optimization involves enhancing elements like titles and meta descriptions. Link building refers to acquiring links from other websites, which can boost credibility and authority in the eyes of search engines.