Programmatic Advertising Explained for B2B

Programmatic advertising is automated ad buying through real-time auctions.

Software buys the right ad slot for you. It does so in milliseconds.

The verdict: in B2B, programmatic is rarely your starting point. It’s a strong supplement when you want your brand to stay top of mind with a specific audience.

What exactly is programmatic advertising?

It’s a way of buying. It’s not a channel.

An automated system purchases ad space based on data and audience rules. No human agrees on each placement.

You used to negotiate a media plan website by website. Now an algorithm decides, for every impression, whether you bid and how much.

Why does the automation exist?

It solves a problem on both sides of the market.

Publishers, the websites and apps with ad space, sell their slots to millions of advertisers instead of hunting for buyers.

Advertisers gain huge reach and can steer precisely on who sees their ad.

It’s no longer a niche technique. Global spending keeps growing year after year, as this explainer on programmatic advertising sets out. It now covers the lion’s share of display advertising.

How is it different from search ads?

The difference with classic PPC lies in the type of space and the type of intent.

With search ads, you reach someone who is actively looking.

With programmatic, you reach someone based on who they are and what they did before. They’re calmly reading an article or using an app.

That distinction decides when programmatic makes sense for your online advertising.

How does programmatic advertising work technically?

Two parties meet: the publisher selling space and the advertiser buying it.

Between them sits a chain of software that runs the auction. The whole process takes a fraction of a second.

Here’s what happens the moment someone opens a page:

• The visitor lands on a website or in an app.
• The site reports the free ad space via a supply-side platform (SSP).
• The SSP passes visitor information (location, device, behaviour) to advertisers’ demand-side platforms (DSPs).
• Each DSP bids on that single impression, based on audience and budget rules.
• The highest bidder wins, and their ad is shown.

Here’s the same flow in one picture:

Who are the four building blocks?

You’ll meet four types of platform:

• DSP: the demand-side platform, for advertisers
• SSP: the supply-side platform, for publishers
• Ad exchange: the marketplace where supply and demand meet
• DMP: the data management platform, which manages audience data

You don’t have to operate them all yourself.

It does help to know that your DSP sits on the buy side, and that the technology leans on visitor data. How a demand-side platform works is covered in a separate explainer.

Which three ways of buying exist?

There are roughly three ways to buy programmatically.

Real-time bidding (RTB): every impression is auctioned to the highest bidder, fully automated.

According to Business Wire, the RTB market grows by around 22 percent per year over the 2021 to 2026 period.

Private marketplace (PMP): buyer and seller agree on a price and a selected inventory in advance. You get more control over where your ad appears.

Programmatic direct: you buy guaranteed space straight from a publisher. It’s usually more expensive, but you know where you’ll appear.

Price: the platforms earn a commission on every impression sold, often somewhere between 10 and 20 percent.

What does programmatic deliver for B2B?

Mainly scale and precision.

You can target on location, behaviour, interest or a previous website visit. Your media buying runs automatically instead of manually.

That saves time and lets you concentrate budget on the placements that work. You also follow your audience across the entire open web, not just one network.

For B2B, that translates best into a supporting role. Three applications, such as the ones below, genuinely add something:

• Top of mind: keeps your brand visible to accounts you already know
• Remarketing: re-approaches warm visitors across many sites
• Awareness: warms up a defined sector or job title

Stay top of mind with a known audience

A long sales cycle has several decision makers, so one click is rarely enough.

Programmatic keeps your brand visible to accounts you know, in between the moments when they actively search.

Remarketing at scale

Remarketing shows ads to people who already visited your website.

Someone who showed interest before converts up to around 70 percent more often than a cold audience.

Programmatic lets you re-approach that warm audience efficiently across many sites.

Awareness within a sector or job title

For example, say you want to warm up a specific market before you harvest demand with search or LinkedIn campaigns.

Programmatic display can build that broad awareness affordably.

Watch out: programmatic mostly generates a lot of cheap reach.

Impressions and clicks are easy to buy. Without qualified leads, they’re vanity numbers.

So steer on pipeline and cost per enquiry, not on impressions. View programmatic as an amplifier of your paid advertising, not a replacement for channels with higher purchase intent.

What are the risks of programmatic advertising?

Programmatic is powerful. Its pitfalls hit harder in B2B, because every euro counts against a small audience.

Four risks matter most:

• Ad fraud: bots generate fake impressions or clicks
• Viewability: an impression doesn’t mean anyone saw it
• Transparency: it’s hard to see where ads end up
• Privacy: third-party cookies are falling away

Ad fraud

Bots that generate fake impressions or clicks cost you budget without any return.

According to Statista, digital ad fraud rose to around 81 billion dollars worldwide in 2022.

So work only with platforms and partners that offer transparency and verification.

Ad viewability

An impression doesn’t mean anyone sees your ad.

Adblockers play a part: well over a quarter of internet users in the US use one (Statista).

Non-intrusive formats help. Still, don’t count every bought impression as reach.

Lack of transparency and control

Because of the automated chain, it’s sometimes hard to see exactly where your ads end up and who sees them.

Ask for clear reporting and clear agreements on placement and costs.

Privacy and data

With third-party cookies falling away, the way audiences are built is shifting.

Targeting that leaned on those cookies gets less reliable. Collect and use data lawfully.

When does programmatic not pay off?

Often, as a first move. With a small budget or a very specific niche audience, broad display reach quickly wastes money.

You pay for people who will never become customers.

Start with the intent channels instead. Here’s the order we’d follow:

Search ads capture those who are already looking. Remarketing and Google Ads lead generation bring warm visitors back.

Only once those foundations run, and you have a clear audience to scale, does programmatic become a logical next step.

Rule of thumb: if search and remarketing aren’t running yet, don’t buy programmatic yet.

If programmatic won’t pay off for you, we’d rather say so up front than let you find out afterwards.

Frequently asked questions about programmatic advertising

Is Google Ads programmatic advertising?

Partly. On the buy side, Google Ads works with real-time auctions for every impression, so the logic is the same.

In everyday language, programmatic usually means the broader buying of display, video and CTV space across the web through DSPs. Google Ads is often seen separately, as a search and display network.

To know when that CTV space makes sense, read connected TV advertising explained.

What is the difference between programmatic and regular display ads?

Display is the ad format: banners and visual ads. Programmatic is the way you buy that space, automatically through auctions.

Much display is bought programmatically today. You can still arrange display directly with a publisher.

How much budget do you need for programmatic advertising?

There’s no fixed minimum. But there’s a floor.

Programmatic only delivers meaningful results once you have enough volume and data for the algorithm to optimise.

With a limited B2B budget, a euro usually returns more in search ads or remarketing than in broad programmatic reach.

Does programmatic still work without third-party cookies?

Yes, but differently.

Targeting is shifting to first-party data (your own customer and visitor data), contextual targeting and deals through private marketplaces.

Anyone who relied on third-party cookies must rethink the approach.

So should you start with programmatic?

Only when it serves leads and revenue rather than pretty reach figures.

A sharp paid advertising approach also works outside classic B2B, as our case where SupaStar VZW boosted its ticket sales shows.

For most B2B companies, the order is clear. Get the purchase-intent channels in shape first, then use programmatic to keep your brand visible and scale warm audiences.

Want to know whether programmatic adds anything in your case, or whether your budget is better spent elsewhere? Contact us and we’ll tell you, even if the answer is no.