One of the most underused validation methods is also the simplest: before building software, deliver the result by hand. It is called a concierge MVP, and it teaches you more, faster, than most prototypes.
The short answer
A concierge MVP means you manually do, for a handful of real users, whatever your software would eventually automate. It proves demand and reveals exactly what to build, all before you write code. If people will pay you to solve the problem by hand, they will likely pay for software that does it.
How it works
Pick 5 to 10 real users with the problem. Deliver the outcome they want using whatever manual tools you have, spreadsheets, email, phone calls, your own labor. They experience the result; you do the work behind the curtain. You charge if you can.
Example: instead of building an "automated invoice analyzer," you manually analyze a few customers' invoices each week and send them the insights. If they value it, you have proven the outcome before building the engine.
Why it is so powerful
- Real demand signal. People accepting (and paying for) the outcome is far stronger than a survey.
- It reveals the real product. Doing the work by hand shows you exactly which features matter and which you imagined.
- Almost no cost. No build, no developers, just your effort.
- Real users, real money. You can earn revenue and relationships before any code exists.
When to graduate to software
Move to building when two things are true: you have proven people want the outcome and will pay, and the manual work has become the bottleneck to serving more of them. That is the moment automation pays for itself.
The clean handoff to a build
A concierge MVP gives you something rare: precise, real-world knowledge of what the product must do, because you have been doing it. That clarity is the perfect input to a product simulation, which turns that hard-won understanding into a documented, runnable foundation for the software, so you automate exactly what you have proven works, nothing more.
Validated by hand and ready to automate? Start a project.
Frequently asked
Isn't doing it manually unscalable?
Yes, on purpose. The point is not to scale; it is to learn whether people want the outcome and what they actually need, before you spend money automating it. You automate once you know it works.
When do I move from concierge to real software?
When you have proven people want the outcome and will pay, and the manual work is becoming the bottleneck. That is your cue to build the software that automates what you have been doing by hand.