It refers to search engine optimization (SEO), which is also commonly known as website optimization, ranking optimization, and search optimization. All of these terms actually refer to SEO optimization (search engine optimization). Some websites even offer free optimization services. You can also use some optimization software to check if your website optimization is adequate and if there's any suspicion of cheating. In fact, SEO optimization highly emphasizes optimization techniques. Websites that appear the same can have completely different ranking results.