Help Center Manage Your Account Ad Targeting using Restrictions

Over-delivery above the maximum impression limit

In order to deliver each ad in less than 0.02 seconds, which is extremely fast, our ad serving engine compares the limit you set (eg: 500 views/day) with a cached number that is around 2 minute-old instead of a real-time number. Getting a real-time stats for each impression will significantly slow down the serving process by over a hundred times. Therefore, the actual impression number delivered can be 3-5% over the limit in some cases.

Low target, high traffic

If the daily target is too small (eg: 500 views per day) when comparing to the high traffic (more than 500 impressions per hour) for this ad, the quota will be reached very quickly. Even in these cases, our ad serving engine would stop serving the ad fairly quickly within 1-2 minutes, as soon as it determines the limit has been reached.

Hourly Quota

Hourly quota is designed to smooth out delivery evenly during the day. It should be used in conjunction with a daily quota. Please note that if the hourly quota is small while the available inventory is high (eg: set at 50 impressions/hour while the available inventory for this ad is 5000 impressions/hour), the actual impressions served might be much higher than the quota because of the delay in caching.

Conflicts between restrictions

If the quota has been reached but another restriction for this ad allows it to show with an OR logic operator, this ad will continue to be served. For example: AdX has 2 restrictions. It should serve up to 1000 impressions per day OR should show to visitors from Canada. If a visitor is from Canada, the ad will show regardless of the number of impressions. In most cases, AND should be used instead. OR can be used after a full logical evaluation during planning.

Other Articles in Ad Targeting using Restrictions

• Companion & Competitive Positioning
• Demographic Targeting
• Frequency Capping
• Maximum/Target Quotas
• Restriction Status Notification
• Restrictions for an ad, zone, campaign or group
• Showtime/Date Restrictions
• Start/End Date
• Target ads by placement URL or referring URL
• Target ads by visitor city
• Target ads by visitor country
• Target ads by visitor language
• Target Keywords
• Time Capping

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