FrontendOrientation
How the Web Actually Works
Follow one click from your finger all the way to the pixels.
For people who build with AI
You can already build.
Juuri helps you understand what you built.
What you are missing is the map: what a server actually is, why the database is the scary part, where a cron job fits, and which half of your app a stranger can lie to.
11
courses
45
lessons
6 hr
of reading, total
124
terms defined plainly
Start here
Two courses that everything else assumes
Read these in order. They build the mental movie the rest of the curriculum keeps referring back to.
BackendOrientation
Frontend and Backend
The line that splits every app in two, and why it is really about trust.
Tracks
Five parts of a running system
Frontend
The part your users touch, and the browser that runs it.
BackendThe part your users never see, and why it exists at all.
Data & DatabasesWhere the facts live, and what happens when two people edit them.
InfrastructureThe machines, the deploys, the schedules, the 3am pager.
AI in the stackWhere models fit, what they cost you, and what they cannot do.
How this site is built
Every idea in the curriculum is used somewhere in this site, on purpose. The timeline in the hero is the real timing of your own visit, read from the browser's stopwatch. The catalogue keeps its filters in the URL. Lesson pages stream a slow panel in after the text arrives. Your progress is a cookie the browser cannot read. The tour page is deliberately the one thing rendered entirely in your browser. Where a page does something a lesson describes, it says so.