What is the difference between Conversion Optimizer and Enhanced CPC?
Both of them seem to do the same thing - automatically adjust individual keyword bids to attain predicted conversions.
Follow-up question - for those campaigns that don't meet the conditions necessary to switch on Conversion Optimizer, is Enhanced CPC a suitable substitute?
Re: What is the difference between Conversion Optimizer and Enhanced C
Read from here
How is ECPC different from Conversion Optimizer?
Both ECPC and Conversion Optimizer work to get you more conversions. The key difference: ECPC works with the max CPC bid you set, never going more than 30 percent over it. Conversion Optimizer needs no max CPC, though it does require a CPA bid.