====== Deployment ======

A Deployment manages Pods and ensures they run correctly.

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===== What it does =====
  * Creates Pods
  * Maintains number of replicas
  * Handles updates (rolling update)
  * Supports rollback

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===== Example =====

You define:


replicas: 3
image: nginx


Kubernetes ensures:
  * 3 pods always running
  * Replace failed pods automatically

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===== Real-world analogy =====

Deployment = "manager of workers"

It ensures:
  * Enough workers exist
  * Workers are updated safely

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===== Key idea =====

You never manage Pods directly in production.
You manage Deployments instead.