Architecture
8 min read
Modular Architecture in Next.js
Gustavo J.
Jan 28, 2026
Beyond the /app directory
Next.js gives us a great starting point with the App Router, but for large systems, we need more.
Key Principles
•Separation of Concerns: Keep business logic away from the UI.
•Dependency Inversion: Use interfaces to decouple modules.
•Shared UI Library: Building a consistent design system.
By treating each feature as a standalone module, we can scale teams and codebases without the usual friction of a monolith.
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