Next.js vs. Everything Else: How We Choose a Tech Stack for Every Client MVP

One of the most common conversations we have with new clients goes like this: they've read something online, talked to a friend, or been pitched by another agency, and they arrive with a strong opinion about technology. 'We need to use Laravel.' 'We heard Vue is better.' 'Our CTO wants React Native.' Our job isn't to validate that opinion or sell them on our preferences. Our job is to choose the right tool for their specific problem — even when that means recommending something different.

Why We Default to Next.js — And What 'Default' Actually Means

Next.js is our starting point for most web-based MVPs. Not because it's trendy — though it is — but because it solves a specific set of problems that almost every early-stage startup faces.

• Server-side rendering and static generation out of the box — critical for SEO
• File-based routing reduces boilerplate and onboarding time for new developers
• API routes mean you can start without a separate backend and peel it out later
• Vercel deployment is one command — no DevOps overhead at MVP stage
• The App Router (Next.js 13+) makes caching, streaming, and layouts composable

For a startup that needs to launch fast, validate quickly, and rank on Google — that's an extremely strong bundle. Next.js isn't perfect. But it's rarely wrong.

The Decision Framework We Actually Use

We don't pick frameworks based on what we're comfortable with. We run every project through a short set of questions that surface the real requirements.

1. Does SEO matter on day one?

If the product is a consumer-facing website or a content-driven SaaS, SEO matters immediately. Server-rendered or statically generated pages index reliably. A pure React SPA — built with just Vite or Create React App — will struggle with search indexing until you add additional layers. Next.js wins here easily.

If the product is an internal tool, admin dashboard, or B2B SaaS behind a login wall, SEO is irrelevant. A lighter setup like Vite + React might actually be faster to build with.

2. How fast will the data model evolve?

MVPs have unstable data models. The schema you design on day one looks nothing like what you need three months later. We lean toward PostgreSQL with Prisma for type safety and migration management. For products where the data model is genuinely unknown and might look like documents (CMS content, flexible user configurations), we've used MongoDB — but less often than you'd think.

3. Does the team that inherits this need to maintain it?

This is the question agencies almost never ask. If a client has an internal engineering team who will take ownership after launch, the stack needs to match their skills. We've delivered Next.js apps to teams who mainly write Python, and it's a terrible handoff. In those cases, we've built with FastAPI on the backend and kept the frontend thin.

4. Mobile or web?

For mobile, we evaluate React Native (Expo) vs. Flutter on each project. React Native wins when the team will iterate fast and needs OTA updates. Flutter wins when performance is critical and the native feel is a product requirement — think fitness apps, real-time dashboards, complex animations.

When We Recommend Against Next.js

A few real scenarios where we've chosen something different:

• Pure admin tools or internal dashboards: We've used Remix or plain Vite+React — simpler, no SSR complexity needed
• High-traffic media platforms: We've recommended Astro for content-heavy sites where JavaScript should be minimal
• Python-first teams: FastAPI backend with a lightweight React frontend — keeps the handoff clean
• Real-time multiplayer or collaborative tools: SvelteKit or Remix with WebSockets — Next.js streaming has limits here

The Stack Behind Our Own Products

We built this portfolio site (veltrexlabs.com) and our open-source boilerplate FastSaaS with Next.js + Tailwind + Prisma + Supabase + Stripe. That's our reference stack for SaaS MVPs — we've used it enough to know exactly where the edges are.

FastSaaS exists because we were rebuilding the same infrastructure on every client project: auth, payments, email, database. Now we start from a tested base and spend client budgets on the actual product.

What This Means When You Hire a Dev Agency

Ask your agency why they chose the stack they're proposing. If the answer is 'it's what we know best' or 'it's the most popular' — that's not a good enough answer. The stack should be chosen for your users, your SEO needs, your future team, and your budget. Everything else is ego.

“The best tech stack for your MVP is the one that gets you to launch fastest, ranks on Google from day one, and your team can actually maintain after we're done.”