The function of a search engine optimization (SEO) strategy is to improve a website's visibility and ranking on search engine results pages (SERPs). By optimizing content, structure, and technical aspects of the site, an SEO strategy aims to attract more organic traffic from users searching for relevant keywords or topics. Effective SEO involves keyword research, on-page optimization, link building, and enhancing user experience. Ultimately, a well-executed SEO strategy can lead to higher visibility, increased site traffic, and improved conversion rates.