Quality score google definition: Google Quality Score is a function of the Google Adwords advertising platform; it is an estimate of the quality of the assets in a campaign.
Google Quality Score was implemented to improve the quality and relevance of the content that advertisers to target Google’s search engine users.
It provides a numerical score from one to ten – one being the lowest, ten being the highest – based on the perceived quality of an advertiser’s:
Advertisers who receive a higher score can enjoy lower costs and better ad placements.