How does OOP enable microservice isolation and autonomy?

Short answer: Encapsulation and abstraction hide implementation details, exposing only necessary interfaces. Polymorphism allows replaceable modules, facilitating microservices independently deployed and evolved. SOLID principles and interface-based contracts promote loose coupling and autonomous service design.

Real-world example (ShopNest)

Think of ShopNest’s Product, Cart, and Order classes: each object holds data + behavior, so pricing rules stay next to the data they use.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.