S Search- Search Engines are what we use to help us search the internet. Google is the most well known. You don't have to use Google you can use Yahoo , Bing, Lycos, and many more. Each search engine has it's own way of helping there customers get on the front page of their search engine. If you get on the front page of Google you can guarantee that you will be on the front page of the other ones.
E Engine It's an engine or a system that these companies have in place that allow us to find what we want online.
O Optimization- This is the process of getting your site on the front page of Google. It takes time especially if you have competitive keywords.
This is a brief explanation of SEO I hope it helps.
