Operational Excellence and Resilience Questions

Design and operationalize systems and processes that deliver efficiency, cost effectiveness, and resilient service delivery. Cover approaches to cost optimization and right sizing, automation and self healing, monitoring and observability, service level objectives and agreements, incident response and disaster recovery planning, chaos engineering and resilience testing, capacity planning, and continuous improvement practices. Candidates should explain trade offs between cost and reliability, instrumentation and alerting strategies, and how to measure and improve operational maturity.

HardSystem Design

36 practiced

Architect a global SaaS platform to achieve 99.99% availability for customer-facing APIs. Address multi-region deployment patterns, data replication and consistency choices, caching/CDN strategies, stateless vs stateful components, testing for failover, monitoring requirements, runbook and on-call readiness, and provide an estimate of cost implications and single points of failure.

EasyTechnical

39 practiced

Define MTTR, MTTD, and MTTA. Explain two architectural or tooling changes a Solutions Architect can recommend to reduce MTTR for a critical service and why those changes are effective.

HardSystem Design

31 practiced

Design a GitOps-based runbook automation system that manages blue/green and canary deployments and triggers automated rollback when SLOs degrade. Include repository layout, CI/CD integration, canary analysis strategy, promotion criteria, how a runbook is invoked automatically or manually during an incident, and how audit logs are stored.

MediumTechnical

31 practiced

Draft an incident runbook template specifically for a primary database outage scenario (write/unavailable). Include immediate triage steps, failover decision criteria (manual vs automated), data integrity checks post-failover, rollback/restore options, customer communication templates, and who to notify internally and externally.

EasyTechnical

63 practiced

Describe what an on-call runbook should contain for engineers handling a service. Provide a clear example structure (title, symptoms, quick checks, mitigation steps, escalation matrix with contacts, rollback steps, monitoring links, and post-incident notes) and explain why each section reduces time to resolution.

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