Monolith vs Microservices vs Modular Monoliths: What's the Right Choice

The article compares three software architecture styles—Monolith, Microservices, and Modular Monoliths—highlighting their strengths, weaknesses, and ideal use cases. It emphasizes that architectural choices impact scalability, maintainability, and development efficiency, and provides guidance on when to transition between architectures.

2. Core Technical Concepts/Technologies Discussed

• Monolithic Architecture
• Microservices Architecture
• Modular Monolith Architecture
• Scalability
• Maintainability
• Development Efficiency

3. Main Points

• Monolithic Architecture

  • Single, tightly integrated codebase.
  • Pros: Simplicity in development, deployment, and testing.
  • Cons: Hard to scale, difficult to maintain as the system grows.

• Microservices Architecture

  • Decoupled, independently deployable services.
  • Pros: High scalability, fault isolation, flexibility in tech stack.
  • Cons: Complexity in orchestration, higher operational overhead.

• Modular Monolith Architecture

  • Monolith with well-defined internal modules.
  • Pros: Easier to refactor into microservices later, better organization than a pure monolith.
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