Maintaining and improving your website's search engine optimization (SEO) can be exhausting. Google has confirmed is that they use about 200 ranking signals when determining organic search page rankings.

The Complete List by Brian Dean:

* Domain Factors
* Page-Level Factors
* Site-Level Factors
* Backlink Factors
* User Interaction
* Special Google Algorithm Rules
* Brand Signals
* On-Site Webspam Factors
* Off-Site Webspam Factors

Start reading and get to know how Google actually see and measure a site before ranking.