Next.js Migration Services
React SPA to Next.js
Your React SPA ranks poorly because search engines can't crawl client-side content. Core Web Vitals are failing. You need server-side rendering, but migration risks breaking production. We provide Next.js migration services — zero-downtime migrations from React SPA to Next.js, with senior engineers who've done this before.
Why React SPA to Next.js Migrations Fail
Most Next.js migrations fail because teams try to do everything at once:
- Big-bang migrations: Trying to migrate everything at once breaks production and loses data
- SEO issues persist: Migrations that don't properly implement SSR/SSG still fail SEO
- Production downtime: Migrations that require shutting down production lose revenue and user trust
- Performance regressions: Migrations that don't optimize Core Web Vitals make performance worse
What a Competent Next.js Migration Solution Actually Involves
A competent Next.js migration requires:
- Incremental migration strategy: Migrate in phases, not big-bang — run both systems in parallel, migrate incrementally, cut over only when stable
- Zero-downtime process: No production shutdowns, no data loss, production stays stable throughout migration
- Proper SSR/SSG implementation: Server-side rendering and static generation configured correctly for SEO
- Core Web Vitals optimization: Performance optimization as part of migration, not afterthought
Trade-off: Incremental migration takes longer than big-bang, but it's the only way to avoid production disasters. Big-bang migrations fail because they try to do everything at once.
How We Approach Next.js Migration
1. Assessment & Migration Strategy
We analyze your React SPA: routing, data fetching, SEO requirements, performance bottlenecks. Then we design an incremental migration strategy — which pages to migrate first, how to run both systems in parallel, how to ensure zero downtime.
Risk mitigation: Migration strategy documented and reviewed before any code changes.
2. Incremental Migration Process
We build the Next.js app in parallel with the React SPA. Migrate one route at a time. Test at each step. Only cut over when everything works. Keep rollback plan ready.
Risk mitigation: Zero downtime, no data loss, production stays stable throughout migration.
3. SEO & Performance Optimization
We implement proper SSR/SSG for SEO, optimize Core Web Vitals, and ensure performance improvements as part of migration.
Risk mitigation: SEO and performance validated before cutover.
This Is For Companies That:
- Have React SPAs with SEO problems that need Next.js migration
- Can't afford downtime or production breaks during migration
- Need senior engineers who understand both React SPAs and Next.js
This Is NOT For Companies That:
- Want big-bang migrations that shut down production (we do incremental only)
- Have React SPAs that work fine and don't need migration
- Need immediate same-day migration (we plan, then execute incrementally)
Common Objections (And How We Address Them)
"How do you reduce migration risk?"
We run both systems in parallel, migrate incrementally (not big-bang), test at each step, and only cut over when everything works. Rollback plan always ready.
Process: Parallel run → Incremental migration → Test → Validate → Cut over only when stable.
"What can go wrong with Next.js migration?"
Common failures: Production breaks, data loss, migrations that take months longer than planned, SEO issues that persist after migration.
How we prevent them: Incremental migration process, zero-downtime strategy, senior engineers, code reviews, automated testing, rollback plans.
Why Companies Choose Yeznio for Next.js Migration
Zero-downtime migration process: We run React SPA and Next.js in parallel, migrate incrementally, and only cut over when stable.
Senior engineers: Developers who understand both React SPAs and Next.js architectures.
Incremental migration strategy: We migrate in phases, not big-bang — reduces risk and allows testing at each step.
SEO & performance focus: Proper SSR/SSG implementation and Core Web Vitals optimization as part of migration.