What is a good SEO article?

Your website cannot be optimized for search engines & will not be picked up by the search engine's crawlers for higher ranking in search results unless the content in it is informative, unique, and relevant to the subject that your website deals with. The content should also use the keywords or the phrases that a user would enter in the search bar to find the products or services you are offering in your website.
Importance of promotion
A high quality content of your website may not be able to attract the readers or the search engines to rank your website high on their first pages unless it is promoted properly. It will remain like a beautiful flower blooming in a desolate place with nobody to see it.
The question, therefore, is: How do you optimize and promote your website for high search engine ranking?
One of the most cost effective or even free methods to do so is to write SEO articles about the product or service that your website seeks to promote. The articles should be published in prominent article directories.
What is a good content?
The content of the articles should also be keyword rich, informative and compelling so that the readers are motivated to get more information about your offering. It should contain links, also called back links to your website. If the readers feel interested, they can click the links, and visit your website.