Search engine optimization (“SEO” Search Engine Optimization) is far more than a few words to type in the page description and enter the website in one or two web directories.
It is rather a combination of content, design, programming and strategic positioning, which is responsible for a spot on the first page of search results.
A website is supposed to eventually be an end in itself, but to sell.
Websites are brought by search engines based on their contents in an order (ranking). It is mainly the text of a website decisive. If a term (keyword) or only rarely appears on a page, that page can not be found under this term.