SEO involves optimizing websites to increase their ranking in search engine results. This involves understanding how search engines like Google work and optimizing elements like content, links, and technical aspects to better satisfy their algorithms. Implementing SEO can lead to more organic website traffic, leads, and sales over time. Proper SEO requires ongoing efforts like content creation and social media engagement to see long-term benefits against competitors. Choosing an SEO agency allows businesses to implement strategic SEO faster than doing it alone.