Case Study: Winning With Programmatic Advertising
An illustrative look at how a regional retailer used header bidding and private marketplace deals in 2016 to raise both yield and ad quality.
The scenario below is a composite illustration built from patterns seen across programmatic advertisers in 2016, not a report on a specific named company. It reflects a shift a lot of mid-sized advertisers made that year, away from chasing the cheapest possible impressions and toward buying more deliberately.
The starting problem
A regional retail chain had been running programmatic display for a couple of years, almost entirely through the open exchange, chasing the lowest CPM available. Spend was efficient on paper, but the marketing team had growing doubts about where ads were running and whether the traffic behind some of those impressions was real. Viewability reports, when they bothered to check them, were unimpressive.
What changed in 2016
Two things shifted the approach. First, header bidding, which had been gaining real traction industry-wide through 2016 as more publishers adopted it to let multiple demand sources compete for the same impression simultaneously rather than in a waterfall, gave the retailer’s DSP access to inventory it previously couldn’t compete for effectively. Second, the team shifted a meaningful share of budget out of the open exchange and into private marketplace deals with a shortlist of publishers whose audience and viewability numbers they’d vetted.
The trade-off they accepted
Private marketplace inventory cost more per impression than the open exchange. The team accepted that trade deliberately, on the logic that a smaller number of verified, viewable impressions on brand-safe, relevant sites were worth more than a larger number of cheap impressions of uncertain quality. That’s a harder case to make internally than “we lowered our CPM,” and it required the team to get comfortable reporting on viewability and quality metrics alongside cost.
What the results showed
Over the second half of 2016, the retailer’s programmatic viewability rate improved substantially compared to its open-exchange-heavy approach earlier in the year, and post-click engagement metrics, time on site, pages viewed, improved alongside it. Cost per impression went up. Cost per meaningfully engaged visitor went down. That distinction was the whole point of the shift, and it’s the number the team started reporting internally instead of raw CPM.
The mobile piece
Mobile programmatic volume had been climbing steadily, and by 2016 it made up a large enough share of the retailer’s traffic that ignoring mobile-specific creative and targeting would have undercut the rest of the strategy. The team built mobile-first creative variants rather than repurposing desktop banners, which meaningfully improved mobile viewability and click-through compared to the reused desktop assets they’d been running before.
Why this case generalizes
The pattern here, moving from open-exchange volume buying toward curated, verified programmatic buying, tracked a broader industry shift in 2016 as header bidding matured and viewability standards became something buyers held sellers to. Businesses that made this shift traded some short-term efficiency for a channel they could defend with real quality metrics, and that trade held up better as scrutiny of programmatic spend increased across the industry.
More from Paid Advertising, the 2016 archive or the Digital Business Marketing Awards.
