DevOps & DevSecOps · Free · Ad-free
Choose your goal. Build the skills to reach it.
Are you aiming for a job, a skill or a certification? Or simply looking to go deeper into a technical subject?
From Linux to the cloud, from DevOps to DevSecOps, discover a platform that adapts to what you already know and guides you to the next useful step.
Reference documentation, courses, quizzes and hands-on labs: learn at your own pace, understand the concepts, experiment and demonstrate what you can really do.
Free, ad-free, and no account required.
- 01 Learn A reference guide or a course lesson explains the concept, the why before the how.
- 02 Test A quiz at the end of each lesson, then a timed practice exam covering several topics.
- 03 Practise A DSOXLab lab on a shell, a VM or a cluster, graded on the state you reach.
- 04 Prove Reach an expected state without detailed instructions, as performance-based exams require.
- 05 Review Missed quiz questions come back in “My learning” until they are answered right.
Entirely free
The whole site, no strings attached.
This is not a trial offer: it is how the site works, and it holds thanks to its readers.
- No advertising
- No sponsored posts
- No paywalled content
- No account to create
- No data collection
New here: where to start?
The featured job comes first: aim for a goal, the site works out what you are missing. Below, the domains in the order where each topic builds on the previous one: starting from scratch, begin on the left. Each card leads to the courses, labs and certifications of its domain.
Featured job
DevSecOps Engineer
Build security into every stage of software delivery, from code to runtime, so that shipping fast and shipping safely stop being at odds, and steer the practice by measurement.
What the job does: Describe and harden infrastructure as codeHold production: vulnerabilities, reliability, incidentsSecure the software supply chainAnalyse an application's riskBuild and run a delivery chainControl admission and protect the runtimeMeasure and spread the practice
The site works out what you are missing from what you already know: no course has to be taken in full first.
See the job The DevSecOps topic path 7 responsibilities · 18 missions · 77 skills
-
Linux The foundation: everything else runs on it. -
Security Shrink the attack surface of what runs. -
Virtualisation Machines on demand, on your own hardware. -
Infrastructure as Code Describe your infrastructure instead of clicking it. -
Containers Package, run and orchestrate. -
CI/CD Automate the pipeline, and secure it. -
Cross-cutting The tooling that serves every path.
Reference documentation
19 guidesGuides that read on their own, and are reused as lessons when a course needs them. One section per subject, with its page count.
What exists in English
The site is written in French, and a part of it is translated into English: 452 pages so far, which is 8 training paths. The labs are a different story, and a much better one: all of them are written in English from the start, brief included. Translating a path is not a copy and paste job. Every lesson is replayed, every command output is regenerated, every quiz question is rewritten so it still tests understanding rather than vocabulary: roughly a week of work per module, and the paths readers ask for are the ones translated next.