Introduction

• An architectural style where the app is built as a collection of small, independent services.
• Each service runs its own process and communicates with others via HTTP/REST or messaging queues.

Reasons for adopting microservices

Improved Scalability & Resource Efficiency

• Individual components can be scaled independently based on demand.
  • No need only ONE part is heavy, but scale EVERYTHING
• Scaling the entire app can optimizes infrastructure costs.

Faster Development and Deployment

• Smaller, specialized teams can develop, test, and deploy each services independently.
• Accelerates time-to-market and enabling continuous delivery.
• If many developers working on same codebase, merge conflicts, blocking each other
• No need small change, deploy entire system

Enhanced Fault Tolerance

• If one service fails, it does not necessarily cause the entire app to crash.