MichaelCade/90DaysOfDevOps

What this is

90DaysOfDevOps is a community-built learning resource for people who want a structured path into DevOps. It began as a 90-day public learning journal (1 January to 31 March 2022) and has grown into three tracks: DevOps fundamentals written and refined by the community, a DevSecOps track focused on security topics with contributions from subject-matter experts, and a Community Edition collecting sessions that were presented on YouTube. The material is aimed at learners who want principles, processes, and tooling explained in order rather than a single tool’s documentation.

The project explicitly does not claim to cover everything in DevOps; it is a curated foundation. The author states it is not vendor-sponsored and that the referenced tooling is accessible through free, community, or open source software project overview.

How to use it

There is no installation step. Start from the website or the repository’s track pages and work through the material in sequence:

1. Open the project site to browse the current learning map, or read the README for the track overview.
2. Choose a track: DevOps fundamentals, DevSecOps, or Community Edition sessions.
3. Follow the linked lessons and videos in order. Reading, watching, and trying the discussed tools on your own is the intended workflow.
4. Use the issues and community channels to ask questions or suggest resources, as the README invites contributions of useful material.

The README describes the main DevOps track as roughly 110k words of content, so expect this to be a long-form reading and practice path rather than a quick reference.

Practical constraints

This is a learning repository, not a runnable tool or platform. It relies on external references, videos, and community content, and the lessons assume you will set up and experiment with the tools yourself. The content is licensed under CC BY-NC-SA 4.0: reuse is allowed with attribution, non-commercial use, and share-alike terms license.

HotRepo's take

The repository’s recorded peak was rank 12 on the all-language GitHub daily chart, and its 4 November 2026 daily snapshot shows 156 stars gained alongside more than 30,000 total stars and 6,783 forks. That pattern — a large, long-lived fork base plus a burst of daily attention — fits a reference learning map that keeps getting rediscovered rather than a single-release tool. For readers, the practical signal is the breadth of the three tracks and the community translation effort; the rank itself does not establish how current or complete any individual lesson is.