Practical Benefits & ROI – Putting Numbers on the Board
Success Tips & Best Practices
Conclusion – A Decision, Not a Religion
Kubernetes is neither silver bullet nor fad. It behaves like a cost amplifier—magnifying good architecture and punishing half‑measures. VM groups remain perfectly modern when:
Q1: Does Kubernetes always save money in the cloud?
A: Savings appear above roughly 50 vCPUs or when workloads are highly elastic.
Q2: Is VM autoscaling enough for micro‑services?
A: It works, but startup latency and bin‑packing inefficiency raise cost and MTTR.
Q3: How hard is the migration from VM images to containers?
A: Begin by containerising stateless services; store config in env vars; shift stateful databases last.
Q4: Can we mix both models?
A: Absolutely—run stateful cores on VMs and bursty APIs on Kubernetes until you’re ready.
Q5: What about security surface area?
A: Kubernetes introduces extra moving parts; use RBAC, network policies, and frequent cluster upgrades.
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