AdWords has a tool that helps you track which of your keywords perform best called AdWords Conversion Tracking.
It’s an analytics tool within AdWords and it can show you what happens after customers click on your ad (for example, whether they purchased your product, called from a mobile phone, or downloaded your app).
Iubenda can help you generate a privacy policy for your site and your use of the AdWords Conversion Tracking tool. Sign up or sign in and choose the “Google AdWords Conversion Tracking” clause.