4D to Next.js Migration Case Study – Modern Frontend Development for Vilbli.no
Squares AS modernized Vilbli.no by migrating from 4D to Next.js. Improved performance, SEO, and scalability with modern frontend architecture.
Client
Eloop Gruppen
Industry
Education
Service
Modernization
Team Setup
3 Developers
Timeline
1 year
Goal
The primary goal was to replace the legacy 4D-based frontend with a modern, scalable solution using Next.js, enabling.
Reduce reliance on legacy technologies
Enable scalable architecture for future growth
Deliver a modern, responsive UI/UX
Enhance SEO performance and search visibility
Improve page speed and Core Web Vitals
Challenge
Migrating from a legacy system like 4D to a modern JavaScript framework introduced several complexities:
- Translating tightly coupled 4D logic into modular JavaScript architecture
- Maintaining data integrity and system behavior during migration
- Integrating seamlessly with existing backend and APIs
- Handling dynamic content and large datasets efficiently
- Preserving SEO rankings during migration
- Upgrading UI/UX without disrupting user familiarity
Outcome
Squares AS executed a structured frontend modernization strategy using Next.js.
The solution included:
- Rebuilding the frontend using Next.js with server-side rendering (SSR)
- Creating reusable, component-based architecture for scalability
- Implementing efficient API integration and data fetching strategies
- Optimizing performance with lazy loading and caching techniques
- Redesigning UI/UX with modern, responsive design standards
- Applying SEO best practices including metadata and structured content