The most expensive mistake we see founders make isn't picking the wrong tech stack — it's building too much before anyone has confirmed the product is worth building at all.
An MVP answers one question, not ten
A good MVP is scoped around a single, specific question: will people actually use this to solve their problem? Every feature that doesn't help answer that question is scope that can wait.
"Minimum" is doing a lot of work in that acronym
Minimum doesn't mean broken or ugly — it means the smallest version that's still genuinely usable end-to-end. Users can tolerate a limited feature set. They can't tolerate a product that doesn't actually work.
Some things are cheaper to build right the first time
Authentication, data architecture, and multi-tenancy are expensive to bolt on after the fact. These aren't "MVP-cut" candidates — they're foundational decisions that are far more costly to redo than to build properly from day one.
Set a real exit criteria before you start
Decide in advance what "validated" looks like — a specific number of active users, a retention benchmark, a willingness-to-pay signal. Without a defined exit criteria, MVPs have a way of quietly turning into the full product without anyone deciding that on purpose.
The goal isn't to build less — it's to build the right amount to learn what's true before committing to the rest. That's exactly how our SaaS Development team scopes every new engagement.