CSaaS: Why the Software You Need Doesn't Exist Yet

There is a panel discussion I keep returning to. It was a group of education technology leaders debating the build-versus-buy question — a question that every organization faces when it comes to software. And about forty minutes in, one of the panelists said something that stopped the conversation cold.

"Build versus buy is a false dichotomy."

He was right. And the reason he was right is the same reason that the software industry is about to go through one of the most significant structural shifts in its history.

The Build vs. Buy Trap

For most of the past two decades, the build-versus-buy question had a fairly predictable answer for most organizations: buy. Off-the-shelf SaaS was cheaper, faster to deploy, and came with ongoing maintenance, security updates, and a support team. Building custom software was expensive, slow, and required specialized talent that most organizations couldn't afford to hire and retain.

This calculus made sense when software development was expensive. It is starting to make less sense as software development gets dramatically cheaper.

The cost of building functional software has declined by an order of magnitude over the past three years. AI-assisted development has compressed timelines that used to take months into weeks. The infrastructure required to run and maintain a software product — cloud hosting, monitoring, security tooling — has become a commodity. The economic argument for defaulting to off-the-shelf SaaS is eroding, and it is eroding faster than most organizations realize.

But the more important argument is not about cost. It is about competitive advantage.

The Problem with Average

Off-the-shelf SaaS is built for the average customer. This is not a criticism — it is a structural reality. A software company with ten thousand customers cannot build a product that is perfectly optimized for any one of them. It builds a product that is good enough for most of them. The features that exist are the features that enough customers asked for. The workflows that are supported are the workflows that enough customers use.

This is fine if your competitive advantage lives in the average. If the thing that makes your organization better than your competitors is the same thing that makes every organization better than its competitors, then off-the-shelf software is probably the right answer.

But most organizations' competitive advantages do not live in the average. They live in the specific. They live in the particular way you serve your customers, the particular data you have accumulated, the particular workflow that your team has refined over years of iteration. And the tragedy of off-the-shelf SaaS is that it systematically flattens these advantages.

When you adopt a piece of software, you are not just adopting a tool. You are adopting the workflows, assumptions, and constraints that the software was built around. Over time, your organization shapes itself to fit the software, rather than the software shaping itself to fit your organization. The competitive advantage that lived in your specific way of doing things gets sanded down to fit the product's average.

What CSaaS Actually Is

Custom Software as a Service is the answer to this problem — but it is not the answer that most organizations think of when they hear the word "custom."

When most organizations hear "custom software," they think of a one-time build: a project with a beginning, a middle, and an end, after which the software exists and the project is over. This model is what gave custom software its reputation for being expensive, slow, and difficult to maintain. The project ends, the team disperses, and the organization is left with a piece of software that nobody fully understands and that gets more expensive to change with every passing year.

CSaaS is different. It is custom software built and operated as a service — with the ongoing iteration, maintenance, and improvement model that made SaaS attractive in the first place, applied to software that is built specifically for your organization's needs.

The economics of this model have changed dramatically. When software development was expensive, the ongoing cost of maintaining custom software was prohibitive for most organizations. As development costs decline, the ongoing cost of maintaining and improving a custom product becomes comparable to — and in many cases lower than — the ongoing cost of licensing software that doesn't quite fit.

The Co-Build Model

The most interesting development in this space is what I would call the co-build model: a partnership between an organization and a development team in which the organization contributes domain expertise and the development team contributes technical execution.

This is not a new idea. What is new is that the cost structure now makes it viable for organizations that could not previously afford it. A mid-market company that would have needed a team of twenty engineers to build and maintain a custom product five years ago may need a team of four today. The AI-assisted development tools available now are not just making individual developers more productive — they are changing the minimum viable team size for building serious software.

The co-build model also addresses the most significant failure mode of traditional custom software: the knowledge transfer problem. When a development team builds something and then leaves, the organization is left with a product it cannot maintain. In a co-build model, the organization's domain experts are embedded in the development process from the beginning. They understand what was built and why. They can extend it, modify it, and maintain it — or at least have an informed conversation with the people who can.

The Question Worth Asking

The question I ask organizations when they are evaluating their software strategy is this: what is the one workflow in your organization that, if it were perfectly optimized for how you specifically work, would create a durable competitive advantage?

Not a workflow that would be slightly better. A workflow that would be fundamentally different — that would allow you to serve customers in a way that your competitors cannot, because the software that enables it does not exist off the shelf and cannot be replicated by buying the same subscription they buy.

If you can identify that workflow, you have identified the case for CSaaS. And if you cannot identify it, that is worth examining too — because it may mean that your competitive advantage is less specific than you think, or it may mean that you have not yet looked carefully enough at where the specificity lives.

The software industry is entering a period in which the economics of custom development are converging with the economics of SaaS. The organizations that recognize this early — and build the internal capability to take advantage of it — will find themselves with a structural advantage that compounds over time.

The ones that wait for the average to catch up will find, as they always do, that the average is not where the advantage lives.

Christopher Roberts is the founder of Intevate Labs, an AI-native strategy and execution firm based in Utah. Intevate Labs builds CSaaS solutions for mid-market organizations. To discuss whether CSaaS is right for your organization, schedule a conversation here.