Search Engine Optimization (SEO) is a way to help websites rank higher in search results, making it easier for people to find them. It involves using the right keywords that people search for, creating helpful and interesting content, and ensuring the website is easy to navigate and loads quickly. SEO also includes getting backlinks from other websites to build trust. When done well, SEO helps attract more visitors without paying for ads, leading to more traffic, customers, or readers from search engines like Google.