What is web optimization?

Web optimization is when a website is designed to rank high on search engines. Everything that your website has results in its optimization including text, keywords, titles etc. Meta tags are tags inserted into the header of a website to help out with website optimization. I found this information at http://www.web-source.net/webpage_optimizing.htm and http://websearch.about.com/od/faqs/f/what_are_meta.htm.