Last month a CMO emailed me a screenshot. It was a Google search for "Martech development services" and she had circled three of the top results in red pen. (Digital pen, on a screenshot. I know. Oh, the irony) Her question was a single line.
"Which one of these am I supposed to approach?"
None of them, as it turned out. But I understood why she was asking. When you Google that phrase right now, you get agencies pitching campaign microsites, systems integrators quoting discovery phases, and vendor-certified partners offering to configure the Salesforce or HubSpot or Braze stack you just finished onboarding. All real services. All with their place. And none of them answering the question she was actually holding, which was closer to why is my expensive new stack still producing data my team can't use.
That is the question Martech development services should answer. Most of the time, the category as currently sold does not.
Why the current market for Martech development services reads sideways
Here's the thing → the phrase is a Rorschach test. Ask any vendor what Martech development services cover and you get back an answer shaped by whatever they happen to sell. That's not an insider's joke. Categories form around procurement templates, and procurement templates need boxes to tick. Build a campaign tool. Integrate two platforms. Configure a product. All legitimate things to buy.
None of them start from the place a Martech leader usually starts, which is:
"I have the systems, I have the team, I have the data, and something between them is broken. What do I actually build?"
That question doesn't map to configuration. The product is already configured. It doesn't map to integration in the iPaaS sense either. The pipes exist, they just don't carry what the team needs. And it rarely maps to a new campaign tool, because the problem is internal. A join between two systems that nobody owns. A decisioning layer that your Segment implementation promised but doesn't deliver in your specific context. An operational view, no single tool in the stack produces natively, so someone in marketing ops is maintaining it in a Google Sheet and pretending that's fine. And trust, the latter happens more than you can imagine.
These are small pieces of custom software, built deliberately, sitting on top of what's already there. That is the work. The market just doesn't have a clean name for it yet.
The precision build
Scott Brinker and Frans Riemersma's State of Martech 2025 report describes what they call the hypertail. A wave of small, purpose-built applications emerging alongside the commercial catalogue. Often built with AI assistance. Often solving highly specific internal problems the big platforms were never going to touch.
I call this work a precision build. Partly because it sounds better than "a little script we wrote," and partly because it's accurate. A precision build isn't a platform replacement. It's a piece of software, sometimes a single page, sometimes a scheduled job, sometimes a small service, built on top of the stack to do the one thing the stack can't.
The reason this is a category now, and not just what engineers have quietly been doing since 2014, is that the cost curve has bent. Two weeks of focused build work is often cheaper and more useful than the twelve-month platform programme that would nominally address the same gap. You know when you play Fallout and you find a settlement full of broken turrets, and instead of rebuilding the whole defence grid you just drop one sentry bot near the entrance and call it fixed? That. Small, targeted, keeps the settlement alive while you figure out the bigger question later.
Matthew Niederberger
When it's the right call
I spend a fair amount of time talking clients out of development work, which is an awkward admission on a page meant to attract development enquiries. But I'll be honest → most Martech problems aren't development problems. They're process and ownership problems dressed up as technology failures. If your marketers can't get an audience built in your CDP, the real question is usually whether anyone on the team knows how to use it. Building a tool around that is treating a symptom, and the symptom will come back.
Matthew Niederberger
Development makes sense when the gap is specific, repeatable, and measurable in hours of manual work per week. Anything vaguer than that is probably a training issue or a vendor conversation. Both are legitimate answers, just not ones a development practice should be selling you.
One example
A client running Adobe Real-Time CDP, OneTrust for consent, and Braze for activation had a latency problem. When a customer updated their preferences, the change took somewhere between eighteen and forty-eight hours to propagate through to active journeys. Technically within contract. Operationally a regulatory risk the compliance team was not willing to carry into the next audit cycle.
Adobe offered a paid upgrade that would shorten the window and extend the contract by two years. A systems integrator offered a discovery phase. What the client actually needed was a small service, about three hundred lines of Python, that listened for OneTrust webhook events and forced a re-evaluation of any active Braze journey touching the affected customer within minutes.
Two weeks of work. Runs in their own infrastructure. Cost less than the Adobe upgrade renewal clause would have added to year two. Nine months later Adobe shipped a similar feature natively, the client turned the custom service off, and the maintenance burden went to zero. That is how these builds are supposed to end.
Matthew Niederberger
So what is the category, actually
Martech development services, in the version worth buying, are small pieces of purpose-built software that close the gap Martech's Law keeps widening between what stacks produce and what teams can act on. They sit on top of what's already there. They're additive. And the good ones are designed with an end date in mind, even if the platforms never catch up and the end date never arrives.
This is the work Martech Foundry exists to do. If the CMO's question at the top of this piece sounds like one you've been quietly asking your own procurement team, and getting back purchase orders for shapes that don't quite fit, that's probably why.
(And yes, I did tell her none of the three circled results were right. She bought me a coffee for that, which felt fair.)
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