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What is Hydration?

The process where JavaScript takes over a server-rendered page to make it interactive

Why It Matters

Hydration enables fast initial loads (from server rendering) with full interactivity (from JavaScript)

Real-World Example

A page loads instantly with content, then becomes clickable as JavaScript hydrates it

“Understanding terms like Hydration matters because it helps you have better conversations with developers and make smarter decisions about your software. You do not need to be technical. You just need to know enough to ask the right questions.”

Callum Holt, Founder, 13Labs

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