Custom delivery curves allow you to provide hints on how you want delivery to be skewed over a campaign, such as a boost in delivery amounts during certain time intervals. Learn how to set line item pacing to use a custom curve.
Ad Manager uses the custom delivery curves provided by you to calculate pacing goals corresponding to the actual traffic patterns. This allows for a stable satisfaction index (SI), even with spiky and variable traffic, and reduces subsequent under delivery.
Set up a custom delivery curve
When you set up or edit a line item, you can set the "Delivery pacing source" to "Custom curve" in the adjust delivery section. Custom curves allow you to set a series of absolute or percentage goals for the duration of the line item.
Individual goals in the series are set by indicating a Start time and either a Percentages or Impressions amount. Since goals must span the entire line item duration, the start time of the first goal must match the line item start time. Each goal applies until the next goal's start time, or in the case of the last goal, the line item end time.
As you set goals, the Remaining or overage amount is displayed. This is the amount that must be added or subtracted to your goals to meet the line item requirement. The total of all goals must add up to either 100% or the full impression goal for the line item.
Amounts are used to derive goals, are not applied literally, and are not guaranteed. If updates are made to a line item impressions goal that has a custom curve uploaded, Ad Manager recalculates the goals without requiring you to modify the curve. Any remaining amount not delivered based on an individual goal is distributed across the other goals.
Example
- Campaign period: 12/1/2023 – 12/5/2023
- Amount: 9920 impressions
Intended delivery plan
| Start time | Amount |
|---|---|
| 12/1/2023 12:00 AM | 3000 |
| 12/2/2023 12:00 AM | 4200 |
| 12/3/2023 12:00 AM | 720 |
| 12/4/2023 12:00 AM | 500 |
| 12/5/2023 12:00 AM | 1500 |
