What is the main factor determining the eligibility of a website for AdSense 'auto ads'?

The main factor determining the eligibility of a website for AdSense 'auto ads' is its compliance with AdSense program policies and Google's quality guidelines. Google assesses the website to ensure that it does not violate any policies related to content, traffic sources, or ad implementation. This includes ensuring that the website has original, high-quality content that provides value to users, that it does not contain any prohibited content such as hate speech or illegal activities, and that its traffic is genuine and not generated through fraudulent means. Additionally, the website's layout and design should be user-friendly and not designed to trick users into clicking on ads. If a website meets these criteria, it is more likely to be eligible for auto ads, which automatically place and optimize ads on the site based on Google's algorithms. Websites with a history of policy violations or low-quality content may not be eligible for this feature.