From stuck to fast.
From fragile to dependable.

No more stalled builds, broken deploys, or performance issues buried in the framework. We migrate safely to Next.js.

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12-hour response time
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30-min call, no strings attached
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PARTNER

TRUSTED BY

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PROBLEMS WE SOLVE

Is your legacy stack the bottleneck?

Whether it's Magento, legacy React/Redux, WordPress, or a custom SSR setup — if your team is stuck on a stack that's holding you back, these problems probably look familiar.

01

Your team can't move

All engineering time goes to maintenance — bugs, patches, workarounds. What doesn't go to maintenance goes to waiting. 20-30 minute builds. 15+ minute deploys. Nothing ships.

02

Every change is a gamble

Business logic in the frontend. State management nobody fully understands. Your senior developers are the only ones who can safely make changes — and they're spending all their time doing it.

03

Performance you can't fix

Slow pages, poor Core Web Vitals, client-side rendering that hurts rankings. The performance ceiling is the architecture itself. You can't optimize your way out of it.

04

Growth blocked by the stack

New features, new integrations, new markets — your business has plans the architecture can't support. Marketing waits on engineering for every content change.

OUR SOLUTION

From fragile and slow to fast and dependable

Four problems, one root cause, one migration to Next.js.

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Migration is an architecture reset

Legacy stacks rarely fail in just one place. Slow builds make deploys risky. Risky deployments slow the team down. The team slows down and performance never gets addressed. These aren't four separate problems — they're one system failing. And the longer it runs, the more your team fears changing any of it.

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How we approach it

We assess your codebase with codified tooling from dozens of migrations, determine the right path — incremental or full rebuild — and execute while the business keeps running.

WHAT YOU GET

Real outcomes delivered

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Engineering capacity unlocked

Surface optimizations finally work because the layer underneath is right. You stop repeating the same fixes every quarter.
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Ship daily, not monthly

Same fast experience whether users are in New York or Singapore. Regional performance gaps stop hurting rankings.
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Faster pages, higher conversions

Caching absorbs traffic spikes so your slow APIs don't become slow pages. Users never see your backend latency.
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A codebase your team can own

Server-rendered content that crawlers see immediately. No more indexing delays from client-side rendering.
WHY BLAZITY

Why choose Blazity as your partner?

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Certified Experts

Vercel Gold Partner – one of 11 worldwide. Certified on the same AI Cloud stack we build with you.
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AI-Native Delivery

We put our AI engineering tools inside your development – with governance, speed & quality gates.
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Trust Before Engagement

Test our OSS libraries, check our partners, or talk to our clients before you commit.
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We Own The Outcome

Engineers who think like owners. Proactive, accountable, and quality-obsessed.

You don't need a scope to start. We assess your operations and define where you can free up your time and budget.

12-hour response time. We'll tell you what's worth building before you commit.

OUR APPROACH

How our migration system protects what's already working

The problem changes from project to project. The process doesn't. Expand each step to see what it looks like in practice.

01. Assessment & Migration Strategy

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Automated route extraction, component inventory, dependency mapping — not a best guess. The assessment determines the right path — incremental or full rebuild. Scope, sequence, and risk mapped before work begins.

02. Parallel Migration Execution

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Route by route or full rebuild — depends on the codebase. Proven paths from Magento, legacy React/Redux, WordPress, and custom SSR. CookUnity's signup funnel ran on parallel systems while we rebuilt in Next.js. Monthly deploys became daily. No downtime.

03. State & Architecture Overhaul

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Business logic in the frontend. State management nobody fully understands. Fragmented modules requiring 5x effort for every change. We separate concerns, modernize state, and unify the codebase into something your team can own.

04. SEO & Ranking Preservation

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Migrations kill rankings when done wrong. Redirect logic, crawl budget, dual-running risks — we manage all of it. Planday: "especially migrations, where you have SEO and organic rankings that need to be maintained."

05. Performance Built In

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We treat migration as a performance reset. SSR, ISR, or PPR — chosen per route based on what the page needs. CookUnity improved responsiveness by 70%. Conversions rose 28%.

06. Post-Migration Stability

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The migration isn't done at cutover. We monitor real-user performance, catch regressions early, and make sure the new architecture holds under production load. Planday's site became easier to operate and develop — unlocking growth opportunities the old stack blocked.

CASE STUDY

Revenue-Critical Subscription Funnel + Next.js Migration | CookUnity

50%

INP improvement

28%

Conversion rate increase

30x

Faster deployment cycle

70%

Development speed boost

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"As a Staff Engineer, it's my job to make sure the code we're writing will stand the test of time for years to come. My bar is very high and the folks from Blazity meet that bar"

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Andrew Choly
Staff Manager
Before you talk to us

FAQ on our Legacy to Next.js Migration services

How to migrate a legacy site to Next.js without losing rankings?

Migrate route by route on a parallel setup, so your current site keeps running until each part is proven on Next.js. Our six-step process covers assessment, parallel migration, state and architecture overhaul, SEO preservation, performance, and post-migration monitoring. We've migrated stacks like WordPress, Magento, and legacy React without disrupting what already works.

How long does a Next.js migration take for an enterprise site?

It depends on the size and integration complexity of the current stack, but enterprise migrations typically run a few months – for example, CookUnity's migration landed in about 3 months. We give you a timeline against your actual scope after a short assessment.

How to migrate multiple WordPress sites to Next.js at scale?

Standardize the migration so many sites share one architecture, codebase, and component set – then roll them out through a repeatable process instead of rebuilding each from scratch. In Iberion, we consolidated 15 WordPress sites into a zero-downtime migration on this model, now serving 150M+ monthly visits.

Our WordPress site can't handle our traffic anymore – what should we move to?

Move to Next.js, where server rendering and caching let you serve high traffic without your CMS becoming the bottleneck. You keep content editing in a headless CMS while the frontend scales independently – and we can migrate without losing your existing SEO rankings.

CONTACT US

Start with the problem. We'll get to the architecture.

Describe your project and an architect will get back with a straight take on what's worth doing and where to start. 12-hour response time.

TRUSTED BY
“Not sure if it's an AI agent problem, a workflow problem, or an architecture problem? We'll figure it out in one call.”
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