SEO actually does not care for meta tags. SEO is interested in the title tag and the meta description tag. A title tag is the main text that describes an online document. The title tag is a vital element to SEO because it appears in three important places: browsers, search engine results page, and external websites.
A meta description tag is a 150 character snippet of a page, article, post, etc. Placing significant and relevant keywords into the title tag and the meta description tag will greatly improve your SEO efforts.