What is the significance of 'quality score' in Yandex Direct, and what are the two primary factors that most influence it?

In Yandex Direct, 'quality score' is a diagnostic metric that reflects the overall quality and relevance of your ads, keywords, and landing pages. While the exact calculation is not publicly disclosed, a higher quality score generally leads to better ad positions at lower costs. It influences ad rank and cost-per-click (CPC), allowing advertisers with high-quality sc....