Pods are atomic and most basic deployable objects in Kubernetes. A Pod represents a single instance of a running process in your cluster. Pods contain one or more containers, such as Docker containers. Pods are ephemeral by nature.
Deployment tells Kubernetes how to create or modify instances of the pods that hold a containerized application. Deployments can help to efficiently scale the number of replica pods, enable the rollout of updated code in a controlled manner, or roll back to an earlier deployment version if necessary.
Features of deployment are Replication, Controller, Versioning, Rollout and Rollback.
A service is a network load balancer.
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