Layered Architecture (N-Tier)
💡 Best for: Simple applications with clear separation of concerns.
✅ Key Concepts:

• Layers communicate only with the adjacent layer.
• Suitable for monolithic applications.

📦 Structure Example:
arduino
CopyEdit
com.example.app
│── controller    // Exposes REST endpoints (Presentation Layer)
│── service       // Business logic (Service Layer)
│── repository    // Database access (Data Layer)
│── model         // Domain models
│── config        // Configuration classes (Spring Boot, Security, etc.)
🔹 Why use it?

• Simple and easy to implement.
• Works well for monoliths or small applications.
• Can be refactored later into a more scalable architecture.

🚨 Limitations:

• Tight coupling between layers.
• Difficult to scale efficiently.