Sure, here is an example of a Kubernetes deployment in YAML:

```
apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-deployment
  labels:
    app: my-app
spec:
  replicas: 3
  selector:
    matchLabels:
      app: my-app
  template:
    metadata:
      labels:
        app: my-app
    spec:
      containers:
      - name: my-container
        image: my-image
        ports:
        - containerPort: 80
```

This deployment will create three replicas of a container running the image `my-image`. The containers will be exposed on port 80.
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