Search engine optimization (SEO) is crucial for businesses because it improves their visibility online, making it easier for potential customers to find them when searching for relevant products or services. By optimizing website content, keywords, and technical performance, SEO helps businesses rank higher in search engine results, driving more organic traffic. This increased visibility leads to more qualified leads, greater brand credibility, and higher conversion rates. In marketing, SEO is a powerful tool to boost long-term growth, as it continually works in the background to bring in new visitors and keep your brand at the top of search results.