DevOps Engineering case studies
DevOps Engineering · Put your knowledge to work in context.
DevOps Engineering is a professional credential aimed at engineers who build, ship, and operate software systems end to end. It suits CI/CD engineers, platform and SRE practitioners, cloud engineers, and developers who increasingly own production outcomes. The exam tests practical judgment across eight weighted domains: CI/CD pipelines, infrastructure as code and configuration management, cloud platforms with containers and orchestration, monitoring and observability, DevSecOps and compliance automation, version control and release engineering, scripting and tooling, and collaboration and DevOps culture. Questions are multiple choice and tend to describe a realistic scenario, then ask which approach or tool behavior best fits it, so memorizing command syntax alone will not carry you. The DevOps Engineering case studies are 5 cases and about 3,599 words.
1The 38-Minute Pipeline That Nobody Trusts
An e-commerce company runs a monorepo with 42 services on a shared CI system. The main branch pipeline takes 38 minutes: 12 minutes building all services, 18 minutes running integration tests against a shared staging namespace, and 8 minutes for security scans.
828 words, about 4 min2Console Drift During a Payment Incident
A platform team manages three AWS accounts (dev, staging, prod) with Terraform. Production has 240 resources, remote state in S3 with DynamoDB locking, and changes go through a pipeline that runs plan on pull request and apply after approval.
593 words, about 3 min3The Kubernetes Rollout That Sent Traffic to Cold Pods
A Kubernetes cluster runs a customer-facing API with 30 replicas behind a Service. HPA targets 60% CPU with min 10 and max 40.
634 words, about 3 min4Alerting on Symptoms When the SLO Budget Is Small
A SaaS provider has a 30-day availability SLO of 99.9% for its public API, measured at the load balancer. The error budget is 43 minutes per 30 days.
789 words, about 4 min5Eight Live Keys, Sixty Repositories, Eight Weeks to Audit
A fintech has 60 repositories across 15 teams. A central security team runs a secret scanner and an SBOM/vulnerability scanner in CI.
755 words, about 4 min