(With the caveat that I've been out for a while, so things could have changed)
Search Ads are pay-per-click (or conversion now? Not sure)
All others are pay-per-impression.
conversions are what the advertiser really cares about, but they're hard for Google to be sure about. And what if you see the ad today but buy it next week in the store?
Search Ads are pay-per-click (or conversion now? Not sure)
All others are pay-per-impression.
conversions are what the advertiser really cares about, but they're hard for Google to be sure about. And what if you see the ad today but buy it next week in the store?