Grokking the AI System Design Interview
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Design Ad Click Prediction

Know the Vocabulary

This lesson uses the terms below many times. Read them once now, and come back here when a later section needs one.

  • Advertiser: A business that pays the platform to show its ads. It sets a budget, a bid, and the audience it wants to reach.
  • Campaign: One advertiser's set of ads with one budget, one bid, and one set of targeting rules.
  • Impression: One ad shown to one user, one time.
  • Click-through rate (CTR): The share of impressions that lead to a click. A CTR of 2 percent means 2 clicks per 100 impressions.

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