Rebuilding State: To reconstruct the state of an entity (e.g., a user or an order), the service replays events in the order they occurred, which allows it to be flexible when

Short answer: dapting to changes. In an Order Service, instead of updating a database record each time an order status changes, the system records each change as an event (e.g., "Order Created", "Order Shipped"). To get the current status of an order, you can replay the relevant events.

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.