Cloud, Data, AI, and Security - From Zero to Hero¶

Plain-English concepts, hands-on builds, deep references, and the most comprehensive certification library on GitHub - free, no signup, nothing gated.

Never opened a terminal, or chasing your fifth cert - both start here. Press / to search all 3.0M words.

Start from zero Browse 148 certifications Look up a concept

148 certifications
27 providers
3.0M words
12,000+ vendor doc links
46 concept pages
15 hands-on builds

The four pillars

Four ways in¶

Learn

Plain English, no exam scaffolding. A strict-beginner on-ramp, 46 bite-size concept pages, and two structured paths through cloud and AI.

Start learning
Build

15 guided builds with inline code and time estimates, 17 architecture patterns, 9 CLI cheat sheets.

Build something
Certify

148 cert guides across 27 providers, each with a fact sheet, practice plan, scenarios, and exam-day strategy.

Find your cert
Reference

16 cross-cloud service comparisons, 11 career roadmaps, plus compliance, FinOps, migration and troubleshooting deep dives.

Browse reference

Quick links

Jump to what you need¶

Day One - terminal, git, HTTP and servers, assuming nothing
Cloud from Scratch - compute, storage, networking, identity
AI from Scratch - LLMs, RAG, agents, evals, fine-tuning
Concepts - 46 five-minute explainers, one idea each
Topic indexes - 13 subjects tied across all four pillars
Glossary - the vocabulary, defined once
Hands-on projects - 15 builds you can finish in a sitting
Labs by certification - which build backs which exam
Practice questions - scenario banks with explained answers
Interview prep - 6 role-specific guides
Freshness ledger - what was last verified, and when
Curated YouTube - the videos worth your time

The library

Certifications by provider¶

Full per-provider breakdown

What's new¶

See the CHANGELOG for the rolling history. Recent batches:

2026-08-14 - The site now opens on a landing page of its own rather than on the repo README, and every counted claim in the README is under CI. The per-provider table was stale in 8 of 22 rows and missing 5 providers entirely, five days after the Tier 1 batch added them; the 17 numbers in the statistics block had nothing watching them either. Both are checked by check-readme-counts.py now.
2026-08-14 - The whole repo is now a searchable website: patrickwiloak.github.io/cloud-data-ai-security-zero-to-hero. Full-text search across 3.0M words, dark mode, mobile nav, generated from these same markdown files. The strict build also caught and fixed an unclosed code fence that was swallowing part of a GCP note, plus 14 broken heading anchors.
2026-08-11 - Anthropic's official Claude certification program (launched March-July 2026) fully covered: new Claude Certified Associate - Foundations (CCAO-F) guide, existing guides retargeted to the real CCDV-F, CCAR-F, and CCAR-P exams with official domain blueprints, pricing, and Pearson VUE logistics. Anthropic promoted from study-track pseudo-provider to the 27^th certification provider; repo now at 148 certs.

Who made this¶

Built by Patrick Wiloak - ex-AWS Solutions Architect, 10 years in tech, 60 certifications and accreditations, 18x multi-cloud certified. YouTube · LinkedIn · Blog · Source on GitHub

We build custom software and products at Nobler Works. Open-source training like this is how we give back - we are nothing without the community that supports us. If you need software built, get in touch.

Want the reps as well as the material?

This site gives you the material. gitGood gives you the reps, and tells you whether you actually know it. Built for every kind of technologist across 21 role-targeted learning paths - engineering, SRE and DevOps, cloud architecture, security, ML and AI, data science, analytics and engineering, QA, product and TPM, and new grads breaking in.

1,950+ practice questions across 34 categories · certification practice exams for AWS CLF-C02, SAA-C03 and DVA-C02, Azure AZ-900, AZ-104, AZ-305 and AI-900, Google Cloud Digital Leader and Associate Cloud Engineer, Kubernetes CKA and CKAD, CompTIA Security+ and HashiCorp Terraform Associate - original scenario questions, never brain dumps, with per-domain scoring and a timed simulator · coding challenges · SQL playground · system design walkthroughs · AI mock interviews · AI resume reviews · salary coaching · live job-market pulse.

10 days free, then $5/month or $40/year. The free tier needs no card.

Fine print¶

Free for educational use with attribution. Every technical claim links to the vendor's own documentation - 12,000+ links across the site.

This is an independent educational resource. It is not affiliated with, endorsed by, or sponsored by AWS, Microsoft, Google, Oracle, IBM, or any other vendor referenced. All trademarks belong to their respective owners.

Found something wrong or out of date? Contributions welcome.