What factors affect Quality Score?

[rehanamalik]

Hello friends,

What factors affect Quality Score?

[RobertBishop]

I was searching on google that, What factors affect quality score?
Google gives me this answer, It is used to determine your cost per click (CPC) and multiplied by your maximum bid to determine your ad rank in the ad auction process. Your Quality Score depends on multiple factors, including: Your click-through rate (CTR). The relevance of each keyword to its ad group.

[deepakrajput]

Quality of your website content and backlinks affect search engine ranking.