Search engine optimization (SEO) involves optimizing websites to increase their visibility in organic search results. SEO is important because most people use search engines to find websites. Ranking highly can provide a website with increased exposure, brand awareness, targeted traffic, and cost-effective marketing. SEO success depends on technical elements like site speed, mobile friendliness, titles, descriptions and internal linking, as well as developing high-quality content and promoting it through blogs, social media, press releases and collaborations.