Which bidding strategy should use you if you want to increase revenue from your ad spend?
Enhanced cost-per-click (ECPC)
Target cost-per-action (CPA)
Target return on ads spend (ROAS)
Target ROAS lets you bid based on a target return on ad spend (ROAS). This AdWords Smart Bidding strategy helps you get more conversion value or revenue at the target return-on-ad-spend (ROAS) you set. Your bids are automatically optimized at auction-time, allowing you to tailor bids for each auction.
Read more here: https://support.google.com/adwords/answer/6268637
The bidding strategy you should use if you want to increase revenue from your ad spend is Target ROAS.
Target ROAS (Return On Ad Spend) is an adwords smart bidding strategy that allows bidding to take place on a target return on ad spend basis. This gets you more revenue or conversion value at the target RAOS set by you. To use this bidding strategy, a campaign must have a minimum of 15 conversions in the past one month.