iAd Implementation Best Practices

While adding iAd to your app is as easy as dropping a banner view in your UI, additional optimizations and a solid understanding of the iAd Network will ensure you're getting the most out of your implementation. See how standard advertising terms such as fill rate, impressions, and eCPM are defined from the iAd Network perspective, learn why these common metrics may vary for you, and discover best practices that can increase your advertising efficiency.

WWDC 2011 - iOS