Your client Anna wants to increase the reach and visibility of her ads. Which bidding strategy would you recommend?
Cost-per-view (CPV)
Cost-per-acquisition (CPA/CO)
Viewable cost-per-thousand impressions (vCPM)
Cost-per-click (CPC)
Explanations:
With viewable CPM (vCPM) bids, you only pay when your ad is able to be seen by potential customers. This means you’re bidding on the actual value of your ad appearing in a viewable position on a given placement. If you’re interested in maximizing ad views, rather than clicks, this bidding strategy can help you achieve this goal better than other kinds of bid strategies.
With viewable CPM (vCPM) bids, you only pay when your ad is able to be seen by potential customers. This means you’re bidding on the actual value of your ad appearing in a viewable position on a given placement. An ad is counted as “viewable” when 50 percent of your ad shows on screen for one second or longer for display ads and two seconds or longer for video ads.
Read more here: https://support.google.com/adwords/answer/3499086?hl=en