The real reason a backend exists: some things must not be decided on a machine the user controls.
Frontend and Backend
The line that splits every app in two, and why it is really about trust.
People explain this split as "the part you see and the part you do not". That definition is useless the moment you have to decide where something goes. This course gives you a rule you can actually apply.
Start the first lesson0/4 lessons read
By the end you can
- Explain the split in terms of trust rather than visibility
- Decide which side a piece of logic belongs on, and defend it
- Read an architecture diagram without pretending
Lessons
Three questions that settle almost every "which side does this go on" argument.
The two halves talk through a contract. Understanding the contract is understanding the app.
Boxes and arrows stop being intimidating once you know that only three things are ever being drawn.