Docker Swarm: A simpler alternative to Kubernetes, Docker Swarm manages clusters of Docker engines and provides features for scaling, load balancing, and service discovery. In microservices, orchestration is crucial to managing complex systems and scaling individual services as needed. Example: Kubernetes can automatically scale the Inventory Service when traffic increases

Short answer: And roll out updates to the Payment Service without downtime.

Real-world example (ShopNest)

ShopNest splits Catalog, Cart, Order, and Payment into services so teams can deploy catalog changes without redeploying payments.

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.