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Phase 1 · Internet & Backend Basics

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XML

Part of the Backend Developer Roadmap.

Summary

An older, verbose data-interchange format still used in enterprise systems, SOAP APIs, and some legacy integrations — largely superseded by JSON for new APIs.

How to Learn This

  • 1Compare the same data structure written in XML vs JSON.
  • 2Learn where XML still shows up today: SOAP, RSS feeds, some enterprise/banking APIs.
  • 3Understand why JSON won out for most modern web APIs — smaller, easier to parse.

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JSON

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Headers & Cookies

More topics in Internet & Backend Basics

InternetHTTP vs HTTPSDNSClient-Server ArchitectureRequest-Response CycleHTTP MethodsHTTP Status CodesStatelessnessREST PrinciplesJSONHeaders & CookiesCORSIdempotencyAPI Gateways
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