AWS EKS Interview Questions & AI Mock Interview (2026)

Beginner AWS EKS Interview Questions for Backend Engineers

Beginner prompts for AWS EKS interviews, with answer guidance and follow-up depth.

[AWS Amazon EKS · Backend Engineer] Walk through a zero-downtime deployment strategy on EKS. Include beginner-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you implement network policies and pod security standards? Include beginner-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Explain cluster autoscaler vs Karpenter-style provisioning. Include beginner-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you troubleshoot CrashLoopBackOff in production? Include beginner-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Design multi-AZ resilience for stateful workloads on Kubernetes. Include beginner-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Walk through a zero-downtime deployment strategy on EKS. Include beginner-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you implement network policies and pod security standards? Include beginner-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Explain cluster autoscaler vs Karpenter-style provisioning. Include beginner-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you troubleshoot CrashLoopBackOff in production? Include beginner-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Design multi-AZ resilience for stateful workloads on Kubernetes. Include beginner-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Walk through a zero-downtime deployment strategy on EKS. Include beginner-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you implement network policies and pod security standards? Include beginner-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Explain cluster autoscaler vs Karpenter-style provisioning. Include beginner-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you troubleshoot CrashLoopBackOff in production? Include beginner-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.

Intermediate AWS EKS Interview Questions for Backend Engineers

Intermediate prompts for AWS EKS interviews, with answer guidance and follow-up depth.

[AWS Amazon EKS · Backend Engineer] Design multi-AZ resilience for stateful workloads on Kubernetes. Include intermediate-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Walk through a zero-downtime deployment strategy on EKS. Include intermediate-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you implement network policies and pod security standards? Include intermediate-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Explain cluster autoscaler vs Karpenter-style provisioning. Include intermediate-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you troubleshoot CrashLoopBackOff in production? Include intermediate-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Design multi-AZ resilience for stateful workloads on Kubernetes. Include intermediate-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Walk through a zero-downtime deployment strategy on EKS. Include intermediate-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you implement network policies and pod security standards? Include intermediate-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Explain cluster autoscaler vs Karpenter-style provisioning. Include intermediate-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you troubleshoot CrashLoopBackOff in production? Include intermediate-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Design multi-AZ resilience for stateful workloads on Kubernetes. Include intermediate-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Walk through a zero-downtime deployment strategy on EKS. Include intermediate-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you implement network policies and pod security standards? Include intermediate-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Explain cluster autoscaler vs Karpenter-style provisioning. Include intermediate-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.

Senior AWS EKS Interview Questions for Backend Engineers

Senior prompts for AWS EKS interviews, with answer guidance and follow-up depth.

[AWS Amazon EKS · Backend Engineer] How do you troubleshoot CrashLoopBackOff in production? Include senior-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Design multi-AZ resilience for stateful workloads on Kubernetes. Include senior-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Walk through a zero-downtime deployment strategy on EKS. Include senior-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you implement network policies and pod security standards? Include senior-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Explain cluster autoscaler vs Karpenter-style provisioning. Include senior-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you troubleshoot CrashLoopBackOff in production? Include senior-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Design multi-AZ resilience for stateful workloads on Kubernetes. Include senior-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Walk through a zero-downtime deployment strategy on EKS. Include senior-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you implement network policies and pod security standards? Include senior-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Explain cluster autoscaler vs Karpenter-style provisioning. Include senior-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you troubleshoot CrashLoopBackOff in production? Include senior-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Design multi-AZ resilience for stateful workloads on Kubernetes. Include senior-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Walk through a zero-downtime deployment strategy on EKS. Include senior-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you implement network policies and pod security standards? Include senior-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.

Architect AWS EKS Interview Questions for Backend Engineers

Architect prompts for AWS EKS interviews, with answer guidance and follow-up depth.

[AWS Amazon EKS · Backend Engineer] Explain cluster autoscaler vs Karpenter-style provisioning. Include architect-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you troubleshoot CrashLoopBackOff in production? Include architect-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Design multi-AZ resilience for stateful workloads on Kubernetes. Include architect-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Walk through a zero-downtime deployment strategy on EKS. Include architect-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you implement network policies and pod security standards? Include architect-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Explain cluster autoscaler vs Karpenter-style provisioning. Include architect-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you troubleshoot CrashLoopBackOff in production? Include architect-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Design multi-AZ resilience for stateful workloads on Kubernetes. Include architect-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Walk through a zero-downtime deployment strategy on EKS. Include architect-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you implement network policies and pod security standards? Include architect-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Explain cluster autoscaler vs Karpenter-style provisioning. Include architect-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] How do you troubleshoot CrashLoopBackOff in production? Include architect-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Design multi-AZ resilience for stateful workloads on Kubernetes. Include architect-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.
[AWS Amazon EKS · Backend Engineer] Walk through a zero-downtime deployment strategy on EKS. Include architect-level depth, concrete metrics, and one follow-up probe.
Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.

AWS Amazon EKS FAQ — People Also Ask

What is AWS EKS?

Managed Kubernetes control plane and node groups. Interviewers expect a concise production example, not a marketing overview.

Is EKS easy to learn?

EKS has a moderate learning curve. Master one end-to-end pipeline project, then rehearse scenario answers aloud.

What scenario-based EKS questions are asked?

Panels probe production incidents, cost trade-offs, failure recovery, and integration with IAM and networking. Use the scenario section on this page.

What AWS EKS questions do senior Backend Engineers get?

Senior loops add architecture depth, multi-account governance, and cross-service trade-offs. Expect follow-ups on metrics and operability.

EKS vs gke — which should I learn for interviews?

Compare workload shape, cost model, team skills, and operational burden. Interviewers want a decision framework tied to a real use case.

What is the difference between EKS and gke?

Both appear in Backend Engineer loops. Explain when each wins on scale, SQL semantics, ops overhead, and ecosystem fit.

How does EKS scale in production?

Cover partitioning, concurrency limits, autoscaling, and observability. Tie answers to throughput, latency, and cost KPIs.

What EKS architecture questions appear in system design rounds?

Expect end-to-end data or backend flows with failure modes, SLAs, and cost analysis. Whiteboard one reference architecture per week.

What companies ask EKS interview questions?

Amazon, Netflix, Uber, Airbnb, and Databricks frequently probe AWS depth. Use company prep links on this page for targeted practice.

How should I prepare for AWS interviews in 2026?

Start with top questions, run a mock interview, drill role×service pages, then link every answer to a project you can explain in five minutes.

What is the salary for AWS Backend Engineers with EKS experience?

Comp varies by level and location. Senior Backend Engineers at top tech firms often see strong total comp when they demonstrate production EKS depth in loops.

Does EKS expertise increase Backend Engineer interview success?

Yes — AWS service depth signals production readiness. Pair technical answers with measurable outcomes (cost saved, latency reduced, incidents resolved).

What is AWS EKS used for?

EKS is used for Managed Kubernetes control plane and node groups. Explain scale, cost, and failure handling in interviews.

How do I prepare for a EKS interview?

Use scenario sections and mock interviews on this page. Backend Engineer panels reward structured answers: context → design → trade-offs → monitoring.

What SQL questions are asked in EKS interviews?

Expect joins, window functions, optimization, and explain-plan questions. Practice partition pruning and distribution design.

Is EKS hard to learn?

EKS rewards hands-on projects. Rehearse trade-offs aloud until answers feel automatic.

What AWS services should a Backend Engineer know?

Backend Engineer candidates should know core AWS IAM, networking, observability, plus role-recommended services on this page.

How long does AWS interview prep take?

Structure answers with context, approach, trade-offs, and metrics. AWS interviewers probe production experience on EKS.

Are AWS interview questions scenario-based?

Structure answers with context, approach, trade-offs, and metrics. AWS interviewers probe production experience on EKS.

What AWS EKS questions appear most in interviews?

Architecture, cost, reliability, and integration — especially scenarios where EKS is the primary layer.

Are these AWS EKS questions enough for FAANG-style loops?

These cover high-intent AWS patterns. Combine with company pages and system design practice for onsite depth.

Beginner AWS EKS Interview Questions for Backend Engineers

Beginner prompts for AWS EKS interviews, with answer guidance and follow-up depth.

[AWS Amazon EKS · Backend Engineer] Walk through a zero-downtime deployment strategy on EKS. Include beginner-level depth, concrete metrics, and one follow-up probe.

Structure your answer with context -> design choice -> trade-offs -> monitoring. Panels probe for Amazon EKS production experience, not textbook definitions. Mention AWS best practices, measurable impact, and failure modes you have handled.

[AWS Amazon EKS · Backend Engineer] How do you implement network policies and pod security standards? Include beginner-level depth, concrete metrics, and one follow-up probe.

[AWS Amazon EKS · Backend Engineer] Explain cluster autoscaler vs Karpenter-style provisioning. Include beginner-level depth, concrete metrics, and one follow-up probe.

[AWS Amazon EKS · Backend Engineer] How do you troubleshoot CrashLoopBackOff in production? Include beginner-level depth, concrete metrics, and one follow-up probe.

[AWS Amazon EKS · Backend Engineer] Design multi-AZ resilience for stateful workloads on Kubernetes. Include beginner-level depth, concrete metrics, and one follow-up probe.