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timlhill
SAS Employee

Dynamic delivery patience, a new optional customer configuration, enables dynamic pacing for small pockets of inventory.

Delivery patience (DP) can increase the pacing of flights that are looking to take advantage of narrow targeting, such as flights that are targeted to multivalue segments. You can now configure delivery patience to dynamically adjust how flights are queued to give them the opportunity to catch up.

DP affects the flight's allowed serve rate when it is behind schedule. DP is a user-specified value between 0.0 and 1.0. Lower DP values result in a higher desired serve rate for the flight, but which is only realized if inventory is available. In other words, the lower the DP value, the more aggressively the flight attempts to get back on schedule.

When the DP is 1.0 – the highest value – the flight has the maximum patience in trying to get back on schedule. The flight calculates a serve rate that, if met, gets it back on schedule by the end of the flight. When the DP is 0.0 – the lowest value – the flight has no patience and attempts to get back on schedule as soon as possible.

When you select the new dynamic DP option, the DP is automatically adjusted between 0.0 and 1.0 every few minutes when the flight's priority is calculated. The dynamic DP is set to be equal to the current calculated priority.

The effect is as follows: When the flight is on schedule (priority >=1.0), the DP is also 1.0. In this case, because the flight is on schedule, the value of DP does not matter.

However, if the flight falls behind slightly, say with priority 0.9, then the DP is also 0.9 and the serve rate is not aggressive in returning the flight to schedule. But if the flight falls far behind, say with priority 0.4, then the DP is also 0.4 and the serve rate is much more aggressive. If the flight falls further behind, the serve rate gets even more aggressive.

The serve rate is only effective if inventory becomes available to the flight. If a swell of inventory becomes available, the flight aggressively takes advantage of it to more quickly get close to being on schedule, at which point the DP increases again.