Monolith: All components are tightly integrated and run as a single unit. Microservices: Application is broken into independent services, each responsible for a specific business capability.
✅ Benefits of Microservices
- Scalability
- You can scale individual services independently based on demand.
- Example: Scale only the payment service during festive sales, not the entire app.
- Technology Flexibility
- Each service can use the most suitable tech stack (e.g., .NET for one, Node.js for another).
- Easier to adopt new technologies without rewriting the whole app.
- Faster Development & Deployment
- Teams can work on different services in parallel.
- Enables CI/CD pipelines for each service, speeding up releases.
- Improved Fault Isolation
- Failure in one service (e.g., email notification) doesn’t crash the entire system.
- Easier to debug and recover from issues.
- Better Maintainability
- Smaller codebases are easier to understand, test, and maintain.
- Encourages clean separation of concerns.
- Organizational Alignment
- Teams can own services end-to-end (DevOps model).
- Promotes autonomy and accountability.
- Optimized Resource Usage
- Services can be deployed on different infrastructure based on their needs (e.g., AKS for compute-heavy services, serverless for lightweight ones).
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