Programmatic advertising

How programmatic buying works

Let's take a shoe workshop in Mexico as an example. They make leather shoes and sell them online to Mexico and the United States. Let's take a running-news website as an example. The site is free to read and makes money by selling ad space next to articles. When a reader opens a race report, there is a blank rectangle on the page. That rectangle is what the shoe workshop wants to fill with a shoe photo.

Here is the market, before any acronym. Advertisers want to show an ad. Publishers have space to sell. An auction sits in the middle: several advertisers name a price for that one page load, and the highest eligible price wins. The old way was a phone call, a PDF insertion order, and a booked number of ads for a month. Programmatic advertising is the same trade, run by software, for a single impression, before the article is on screen.

Walk one impression, meaning one showing of an ad. A reader opens a race report on a running-news website. The site asks for bids. The shoe workshop's buying software, a DSP (demand-side platform: the advertiser's buying seat), sees the request, checks that the reader looks like a shopper for leather goods, and offers a $2.40 bid. Two other advertisers offer a $1.90 bid and a $2.10 bid. The shoe workshop wins. The shoe photo renders. The running-news website gets paid through its selling software, an SSP (supply-side platform: the publisher's selling seat). All of that finishes in the time it takes the page to load.

The auction itself is either an open auction, where any approved buyer can bid, or a negotiated private marketplace deal, where the shoe workshop was invited. Programmatic advertising is the method, not the placement. The same software can buy display, video, audio, and connected TV.

What programmatic is not

Programmatic advertising is not robots running the brand. Let's take a shoe workshop in Mexico as an example. They make leather shoes and sell them online to Mexico and the United States. A person at the workshop still chooses the audience, writes the rules, approves the creative, and decides what a win looks like. Automation only prices each impression. No human could do that at the volume of a news site's daily page views.

Programmatic advertising is also not a quality guarantee. The software buys whatever the setup allows. Let's take a shoe workshop in Mexico as an example. They make leather shoes and sell them online to Mexico and the United States. If the workshop leaves the rules wide open, the shoe ad can land on a cheap blog nobody has heard of. That is why brand safety controls and viewability checks (whether the ad was actually on screen) are part of the job, not a nice extra. Automation follows the brief you actually wrote.

Where the money actually goes

Let's take a shoe workshop in Mexico as an example. They make leather shoes and sell them online to Mexico and the United States. The workshop puts $5,000 of budget into a programmatic line. That $5,000 of budget is not all media. Platform fees, exchange fees, data fees, and verification fees come out before an impression is bought. If 20% of the $5,000 budget is fees, $4,000 of the $5,000 budget reaches publishers such as a running-news website. The gap is the supply chain, and it is worth asking partners to show it in dollars, not in a slide titled transparency.

This is why viewable CPM (cost per thousand viewable impressions) and eCPM (effective cost per thousand impressions) are more useful than the bid price the shoe workshop typed in. Those two numbers tell you the realized cost of something a person could actually see, after fees, after the auction, after the ad either rendered in view or did not.

Common programmatic mistakes

• Judging a line item on clicks when a shoe workshop bought it for reach, then calling programmatic advertising a failure.
• Running one broad open-auction line and treating the average as performance, including cheap blogs mixed in with a running-news website.
• Letting an inclusion list go stale for a year, then blaming the algorithm for where the shoe ad appeared.
• Comparing programmatic CPM (cost per thousand impressions) to a Meta CPM as if a news-site banner and a feed ad were the same product.