What bidding method should be chosen if to notify AdWords about money which is willing to pay?
Focus on conversions (for Search and Display ads)
With this advanced bidding method, you tell Google Ads the amount you’re willing to pay for a conversion, or cost per action (CPA). A conversion (sometimes called an acquisition) is a particular action you want to see on your website.
CPA bidding is a method of paid advertising that allows you to tightly control your advertising spend. Rather than paying Google for every time someone clicks on one of your ads (as with CPC bidding), CPA bidding only requires you to pay for each conversion, a metric you define yourself when you set up each campaign.