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Unit 4

Bridging the Data Gap Between Systems

APIs, webhooks, servers, and how apps talk to each other.

This unit is coming after Unit 3 is complete.

Here's what's planned — module content will be built as you work through it.

  1. Module 1

    Servers — What's Actually Running

    What a server does, how requests get routed, what "running" means

  2. Module 2

    REST APIs — Request and Response

    Endpoints, methods, status codes, headers, building your own

  3. Module 3

    Webhooks — Events Across Systems

    How systems notify each other in real time

  4. Module 4

    Authentication — Why Login Works

    Tokens, sessions, cookies, OAuth — the full login flow

  5. Module 5

    Third-Party APIs

    How your app talks to Stripe, Twilio, and everything else