What is pacing?
Pacing is the rate at which a campaign spends its budget or delivers impressions across its flight dates. In programmatic advertising, the DSP uses pacing settings to decide how aggressively to bid at any moment, so that a monthly budget is not gone in three days or left half unspent at the end.
Good pacing keeps delivery on plan. Poor pacing is one of the most common reasons campaigns underdeliver or burn budget on low-quality inventory. It also affects which impressions you win, since a campaign that is behind will bid harder to catch up.
How pacing works
Most DSPs offer a few pacing approaches, though the names vary:
Even: spreads spend evenly across the flight.
Ahead: spends slightly faster than even, to protect against underdelivery late in the flight.
ASAP: spends as fast as available inventory allows, useful for short bursts like a launch day or a sale.
Pacing can apply to the whole flight, to each day or both. Traders track it with a simple ratio:
Pacing % = actual spend to date / expected spend to date x 100
For example, a campaign with a $30,000 budget over 30 days should have spent about $10,000 after day 10. If it has spent $8,000, it is pacing at 80% and underdelivering. If it has spent $12,000, it is at 120% and running hot.
Daily pacing adds another layer. Even with flight pacing set to even, a daily cap stops a single day from absorbing too much budget, which is useful around high-traffic events when bid prices can spike.
Why pacing matters
Delivery: underpacing leaves budget and reach on the table, especially for fixed-date campaigns.
Efficiency: overpacing can push the DSP to win expensive or low-quality impressions just to spend.
Consistent presence: even delivery keeps your brand visible through the whole flight instead of in one burst.
Steadier optimization: automated bidding has an easier time learning when spend is predictable.
Underpacing usually points to narrow targeting, low bids, strict frequency caps or deals that are not delivering. A deal ID that sends few bid requests is a classic cause of slow delivery. Overpacing often means bids are too high or targeting is too broad.
Pacing vs budget
Budget is how much you plan to spend. Pacing is how and when that money goes out. Two campaigns with the same budget can perform very differently depending on pacing: one spread across the month, the other spent in the first week. Budget sets the limit; pacing controls the curve under it. Pacing also affects reach and frequency, since faster delivery to a fixed audience tends to raise frequency. Reviewing both together, ideally every day, is how traders catch problems before they become expensive.
Pacing with AdGeeks
In DV360, Amazon DSP and Adform, our senior traders set pacing by objective and check delivery daily. When a campaign underpaces, we adjust bids, targeting or supply instead of waiting for the flight to end, and reporting shows spend against plan. To launch a campaign that delivers on schedule, request access.
