Two Tools, One Philosophy: What MVP and Fit-for-Purpose Have in Common
Inside the Classroom (Episode 2)
They came from different disciplines and serve different functions. But they were both built to correct the same failure — and they are stronger when they work together.
In Episode 1, I described the sequence problem: what happens when teams build before they have defined the concern. That problem sits at the intersection of two concepts I have been thinking about a great deal lately — MVP and the Fit-for-Purpose concept — and the more I examine them together, the more I see they are asking the same fundamental question from two different starting points.
What is the real value we are delivering? And who are we actually delivering it to?
Those two questions are two sides of the same coin. And they are harder to answer honestly than most organizations expect.
WHERE THEY CAME FROM - MVP emerged from lean startup thinking — a discipline built for product teams navigating uncertainty, trying to learn as efficiently as possible before committing resources to a direction. Fit-for-Purpose emerged from enterprise architecture practice — a discipline built for organizations trying to align complex systems, investments, and decisions across long time horizons.
And yet both were designed to interrupt the same failure: the organizational tendency to produce more than is needed, earlier than it is useful, at a cost the output cannot justify. On the architecture side, this failure shows up as comprehensive documentation produced before any stakeholder concern has been defined, or governance processes that enforce procedural compliance without enabling good decisions. The output is technically rigorous. The value it generates is difficult to trace. On the product side, it shows up as feature sets built to internal specifications rather than tested assumptions, and roadmaps driven by capability rather than evidence of user need. The team is productive. The value delivered is unclear.
MVP was built to interrupt the product version of this failure. Fit-for-Purpose was built to interrupt the architecture version. Both reject comprehensiveness as a default. Both treat effort that cannot be connected to a specific, defined value as waste — regardless of how technically accomplished that effort is.
WHAT THEY SHARE - Once you see the structural parallel, the shared vocabulary is hard to miss.
- MVP asks: what is the smallest thing we can build to test a real assumption?
- Fit-for-Purpose asks: what is the minimum effort required to enable a specific decision?
- MVP measures success by learning — did reality confirm or correct the assumption?
- Fit-for-Purpose measures success by resolution — were the stakeholder concerns that motivated the work actually addressed?
Both insist that the measure of quality is not the sophistication of the output. It is the usefulness of that output to the person who needs to act on it.
WHERE THEY DIFFER — AND WHY IT MATTERS - The difference between the two is operational, not philosophical, and it is worth being precise about.
- MVP tolerates imperfection in the service of learning. The first version of a product is not meant to be complete — it is meant to be testable. The incompleteness is deliberate. It is what makes the learning possible.
- Fit-for-Purpose is a scoping discipline, not a testing framework. It requires the concern to be defined before the work begins. The minimum it produces is not a prototype. It is guidance sufficient for a decision to be made correctly.
This is an important distinction. It means the two concepts are not strictly sequential — one does not have to finish before the other begins. They can and should work concurrently: Fit-for-Purpose ensuring that the work stays anchored to a defined concern, MVP ensuring that the build stays lean and grounded in real evidence. Strategic alignment and execution speed, running in parallel.
The failure mode to avoid is using the MVP as a substitute for prior concern definition — treating iteration as the way to discover what the problem is, rather than the way to test a solution to a problem already named. When that happens, the team is learning, but at a cost far higher than necessary.
STRONGER TOGETHER - Used together and anchored to a clear purpose, the two concepts address the full span of the challenge.
Fit-for-Purpose asks the hard questions before the build begins: what concern are we addressing, for whom, and is this investment justified? MVP asks the honest questions during the build: is this the smallest thing that tests our solution, and does reality confirm we are on the right path? We use Fit-for-Purpose as a compass for strategic direction—ensuring we are solving the right problems—and MVP as the engine of execution to test assumptions as quickly as possible, we can create innovations that are both precise and fast.
Fit-for-Purpose anchors the MVP's speed with clear intent. “One purpose, One direction, Be clear on the value you are delivering.”
Raschada Nootjarat is an Enterprise Architect with a focus on AI strategy, architecture governance, and the intersection of human and machine systems in organizational transformation. She starts this website together with her "Fit-for-Purpose Enterprise Architecture" book in April, 2026.