Deployment: Deployments are used for stateless applications. They ensure that a specified number of replica Pods are running and support rolling updates and rollbacks. Deployments do not guarantee stable network identities for Pods.
StatefulSet: StatefulSets are used for stateful applications like databases. They provide guarantees for the stable network identity, ordered deployment, and scaling of Pods. Each Pod in a StatefulSet has a unique hostname and persistent storage, making them suitable for stateful workloads.