Frequently Asked Questions
DevOps Ledger is a platform for getting good at DevOps by practicing real production decisions. You make a call, defend it against a senior-engineer AI that pushes back, then get scored against a verified rubric. The DevOps guides and AI skills are free; the challenges are a one-time $39 unlock.
Partly. The DevOps guides and the AI skills are free and need no account. The challenges are a one-time $39 unlock that covers every challenge, the mock interviews, and the private Discord. You can browse every challenge before you pay. There is no subscription and no recurring charge - you pay once and keep access.
ChatGPT is built to agree with you, and it does not actually know the right answer - it generates a plausible one on the spot. Every DevOps Ledger challenge has a verified rubric written in advance. The AI argues against you to expose weak reasoning, then you are graded against the real answer, not the model's mood.
Each challenge has a ground-truth answer key written and checked by a working DevOps engineer. After you defend your decision you are scored on correctness, reasoning, and how you handled pushback, with a breakdown of what you argued well and the traps you fell into.
Yes. Real DevOps interviews test how you reason through incidents and tradeoffs, not whether you memorized definitions. Defending a decision against an AI that keeps pressing, then getting scored on it, is direct practice for system design and incident-response interview questions.
Challenges cover real incidents and design calls across Kubernetes, Docker, Terraform, AWS, CI/CD, Linux, and incident response - from a 1.6GB Docker image with 8-minute builds to a Terraform plan that wants to destroy the production database. New cases are added regularly.
No advanced experience required. If you know basic Linux and a few core tools (containers, CI/CD, a cloud) you can start. Challenges range from beginner to advanced, so they scale with you as you improve.
Ready-to-use skill files for AI tools like Claude and Cursor that automate real DevOps workflows - optimizing Docker images, debugging pipelines, triaging incidents, and more. They are provider-agnostic and free to use.
Branko Petric, a working DevOps engineer who has been on both sides of the interview table. Every challenge, guide, and rubric comes from real production experience and real hiring decisions, not documentation screenshots.