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As Kubernetes turns five, we explore the changing face of DevOps in the k8s world. DevOps rose to be a new subculture within existing teams, sometimes yielding new “DevOps teams” and even leading to a new class of tools and methodologies. The focus shifted from idempotency to immutability to the clean separation between runtime infrastructure and application deployment. Infrastructure and development teams can cleanly and separately focus on their own areas of expertise, taking away massive configuration and collaboration challenges.