Brain Dean at Backlinko recently put together a list of the 200 ranking factors Google uses. He noted that some are proven, others are controversial, and some are SEO nerd speculation.
Dean broke his list into nine categories: Domain Factors, Page-Level Factors, Site-Level Factors, Backlink Factors, User Interaction, Special Google Algorithm Rules, Brand Signals, On-Site Webspam Factors, and Off-Site Webspam Factors.
Domain Factors
Google’s Matt Cutts said in a video that domain age is not all that important a concern, as