The Infrastructure Learning Platform

Real Cloud Infrastructure

Hetzner VMs spin up in under 15 seconds. Real servers, real networks, real PostgreSQL clusters - not sandboxed simulations or Docker containers.

AI Tutor - Sage

Sage watches every command you type and teaches through questions, not answers. Built on Claude, tuned for infrastructure. It never gives you the solution - it guides you to find it.

7 Learning Modes

Guided, Challenge, Break-Fix, Speed Run, Custom, Peer Review, and Exam. Every student learns differently - pick the mode that fits your style and skill level.

Browser Terminal

Full xterm.js terminal in your browser with real SSH access to real servers. No local setup, no VPN, no config files. Open the browser and start working.

Auto-Grading

Every objective is verified against actual system state - not multiple choice, not self-reported. We query the real database to confirm you did it right.

Skill Tree & Progress

Visual progression map with prerequisite chains. See exactly where you are, what you have mastered, and what to tackle next. XP, streaks, and leaderboards included.

Pick a Lab

Browse the catalog by technology, difficulty, or topic. Filter by learning mode. Each lab shows estimated time, prerequisites, and what you will learn.

Infrastructure Spins Up

Real cloud servers provision in under 15 seconds. You get your own isolated environment - a real PostgreSQL cluster, real networking, real everything.

Learn by Doing

Work through objectives in the browser terminal. Sage watches every command and teaches through Socratic questioning. Auto-grading confirms mastery in real time.

Replication, HA, backup, tuning, security, extensions, and more

Deployments, services, networking, storage, and operators

Providers, modules, state management, and CI/CD pipelines

Replication, InnoDB internals, performance tuning, and backup

Replica sets, sharding, aggregation, and indexing strategies

System administration, networking, security, and automation