Search Engine Land, a very successful SEO resource company, and led by Danny Sullivan, a veteran in the SEO world, several years ago produced this Periodic Table of SEO Ranking Factors. (The-Periodic-Table-of-SEO-Ranking-Factors-Complete-Guide) It outlines, in a very comprehensive way, all the important factors that affect rankings for websites. This chart is updated from time to time, to apply the new changes with the search engine algorithms.
The chart is broken into several sections: On Page, Off Page, Violations and Blocking. It is rated on a scale from +3 down to -3, with +3 being the most important, and -3 being really bad.
Take some time to study this chart, referring to your areas of responsibility. It will help you to identify the strengths and weaknesses of your website structure and factors that are helping or hurting you. As you review these factors, you’ll see areas where you can definitely improve. One such area, which is the nature of most websites, is the lack of good relevant content. On this chart, content is addressed in both the “On The Page SEO” and “Violations” sections. If your site suffers from “thin content” as well as “Quality” content (Having substantial quality content), then adding good relevant content will be important.
For the past year, Google has been preaching the importance of having content that is relevant, of good quality and not duplicated either on your website or across the Internet. Look for ways you can add good quality content on your web pages.
This chart should be an excellent guide to help you produce a website that will rank high in the search engines.