Explain what is conversion optimizer in AdWords?

Conversion optimizer in AdWords is a feature that helps you drive more conversions at lower cost. It uses your AdWords conversion tracking data to manage the bidding process at keyword level so that your ads drive as many conversions as possible at or below your (advertiser’s) specified cost per conversion (also called cost per action, CPA). It helps in getting a better return on investment by segregating the unprofitable clicks from the profitable clicks for your campaigns.

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