Search Engine Optimization (SEO), is the practice of optimizing your website with the intention of improving keyword rankings and increasing organic traffic from search engine results pages (SERPs).
It is a fundamental part of marketing that improves your website’s online visibility for searches relevant to you. If your website isn’t showing in the SERPs for keywords and phrases that you feel you should be, you’re either not doing something right or you’ve got more work to do.
SEO specialists optimize material for search engine results. They mainly optimize website content for search engines. They may or may not generate the content, but they review it for SEO.