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
Sure, here is an example of a Kubernetes Deployment YAML file:

```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 3 replicas of a Pod running the `my-image` Docker image. The Pods will be exposed on port 80.

Here is a breakdown of the YAML file:

* The `apiVersion` field specifies the Kubernetes API version that the Deployment is using.
* The `kind` field specifies the type of Kubernetes object that the Deployment is creating.
* The `metadata` field contains the name and labels for the Deployment.
* The `spec` field specifies the configuration for the Deployment.
* The `replicas` field specifies the number of replicas that the Deployment should create.
* The `selector` field specifies the labels that should be used to select Pods for the Deployment.
* The `template` field specifies the configuration for each Pod in the Deployment.
* The `metadata` field in the `template` section contains the labels for the Pod.
* The `spec` field in the `template` section specifies the configuration for the Pod's containers.
* The `containers` field in the `spec` section contains a list of containers for the Pod.
* The `name` field in the `containers` section specifies the name of the container.
* The `image` field in the `containers` section specifies the Docker image for the container.
* The `ports` field in the `containers` section specifies the ports that the container exposes.

I hope this helps!
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