Expertise
Next.js expertise: server-rendered React sites and applications
Next.js is the most widely used React framework for producing server-rendered sites and applications. Its App Router is built on React Server Components, streaming, Server Actions and a granular caching system that lets you choose, page by page, between static, dynamic and revalidated rendering.
Agencei chooses Next.js for demanding marketing sites, content platforms, headless storefronts and SaaS applications that need both good indexing and a responsive interface.
This expertise serves companies that want a fast site, well ranked in search engines, easy to edit through a CMS and built on a React foundation their own teams can take over and extend without a full rewrite.
Use cases
Marketing sites and content platforms
Statically generated or on-demand revalidated pages, fed by a headless CMS, with metadata and structured data managed in code.
Headless e-commerce
Next.js frontend connected to PrestaShop, WooCommerce or a commerce API, with cart, search and product pages tuned for Core Web Vitals.
SaaS applications
Authentication, customer areas and dashboards in a single application, with Server Components for data and client components for interactivity.
Multilingual portals
Locale-based routing, translated content, redirects and hreflang tags handled cleanly in the App Router.
Migration from a monolithic CMS
Moving from a WordPress site or a custom theme to a Next.js frontend while preserving URLs and existing search rankings.
Project types
- Premium marketing website
- Editorial platform or blog
- Headless e-commerce storefront
- SaaS application
- Multilingual customer portal
- Marketing landing pages
- Product documentation
Integration with the rest of the stack
Next.js + Spring Boot API + PostgreSQL on AWS
The Next.js frontend consumes a Java API hosted on ECS or EKS, the PostgreSQL database runs on RDS and the site is served through CloudFront.
Next.js + headless WordPress
WordPress remains the editing tool, exposed through WPGraphQL or the REST API; Next.js generates the pages and revalidates them on every publish.
Next.js + Node.js (Route Handlers, Server Actions)
For lightweight needs, the server layer lives directly inside Next.js: forms, webhooks, database access with Prisma or Drizzle.
Next.js + Vercel or Docker container
Deployed on Vercel when simplicity matters most, or as a Docker image on AWS and Kubernetes when the client mandates its own infrastructure.
Examples of problems solved
Hydration mismatch errors
Identifying content that differs between server and client (dates, randomness, browser extensions) and fixing it with an isolated client component or deferred rendering.
Cache serving stale data
Reviewing fetch options, revalidateTag and revalidatePath, and drawing a clear line between static, dynamic and revalidated routes.
Degraded Core Web Vitals
Optimising images with next/image, fonts with next/font, cutting client-side JavaScript and streaming slow sections with Suspense.
Stalled Pages Router to App Router migration
Incremental route-by-route migration, both routers coexisting, adapting layouts, data fetching and metadata.
Frequently asked questions
What is the difference between Server Components and client components?
Server Components run only on the server, access data directly and send no JavaScript to the browser. Client components handle interactivity (state, events). A page usually combines both.
Is Next.js suitable for a simple marketing site?
Yes, especially when performance and SEO matter. Pages are generated ahead of time, served by a CDN and revalidated when content changes in the CMS.
Do we have to host on Vercel?
No. Vercel is convenient, but Next.js also deploys as a Docker container on AWS, Kubernetes or a Node.js server. We choose based on your cost and data sovereignty constraints.
Can Next.js connect to our existing API?
Yes. Next.js consumes any REST or GraphQL API. Server Components call the API on the server side, which avoids exposing keys and reduces the JavaScript sent to the client.
How do you handle SEO with Next.js?
Per-page metadata through the Metadata API, generated sitemap and robots files, structured data, redirects preserved during migrations and Core Web Vitals monitoring after launch.
Related services
Website development
Fast, well-ranked brochure and corporate websites built with Next.js, headless CMS or WordPress.
See this serviceWeb application
Business tools, portals and back offices built with React, Next.js, Node.js and Spring Boot.
See this serviceReact development
High-performance web interfaces with React and Next.js, design systems and takeover of existing projects.
See this servicePerformance Optimization
Profiling-based diagnosis and targeted fixes: Core Web Vitals, SQL queries, caching, CDN.
See this serviceSaaS platform
Multi-tenant SaaS platforms with subscriptions, billing and infrastructure ready to scale.
See this serviceRelated expertise
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