How does the enhanced cost-per-click (ECPC) bidding strategy work?
- ECPC looks at a listed target return on investment (ROI), then lowers a max cost-per-click (CPC) bid.
- ECPC looks at ad auctions, then raises a max cost-per-click (CPC) bid.
- ECPC looks at ad auctions, then lowers a max cost-per-click (CPC) bid.
- ECPC looks at a listed target return on investment (ROI), then raises a max cost-per-click (CPC) bid.