Product

What actually belongs in an MVP (and what never does)

MB
Mahmoud B.
Jan 9, 2026 · 8 min read
SaaS analytics dashboard with performance graphs on a laptop screen

Almost every MVP we've seen fail didn't fail on execution — it failed because it tried to prove five things at once instead of one.

An MVP has exactly one job: to prove, as cheaply as possible, that the core assumption behind the business is true. Everything that doesn't serve that single test is scope you're borrowing against your runway.

The one-sentence test

If you can't finish the sentence "this MVP exists to prove that ___," you don't have a scoped MVP yet — you have a wish list with a deadline.

We ask every founder we work with to write that sentence down before a single ticket gets created. It's a surprisingly hard exercise — most first attempts name three things, not one, and the scoping conversation is really about picking which of the three actually matters first.

Person using a lean mobile app on a smartphone, the kind of narrow-scope product an MVP should ship

Talk to five users before you build five features

The instinct to add "just one more" feature almost always comes from imagining what a user might want, not from asking one. Five real conversations with the people you're building for surface sharper priorities than a week of internal debate — and they're cheaper.

Settings pages are a trap

Account settings, admin dashboards, and configuration screens feel necessary but almost never test the core hypothesis. Hardcode it, fake it with a support ticket, or skip it — you can always build the real thing once you know anyone wants the product at all.

Every screen you build that isn't testing the hypothesis is a screen you're paying for twice — once now, and again when you rebuild it correctly later.

How we scope with clients

We start every engagement by listing every requested feature, then sorting them into exactly two piles: what the hypothesis needs, and everything else. The "everything else" pile doesn't get deleted — it gets a home in a backlog for after launch, so nothing feels lost, just sequenced.

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What never gets cut

Security fundamentals, data integrity, and anything that would embarrass you if it broke in front of a real customer stay in scope regardless. An MVP is lean, not reckless — cutting the wrong corner just moves the failure from "nobody wants this" to "our first user's data got corrupted."

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MB
Mahmoud B.
Founder & Principal Engineer, Zenlor

Mahmoud B. writes and ships production systems at Zenlor, from AI agents to the infrastructure underneath them.

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