With jQuery, your rendering is 100% dynamic, meaning, you load your JS on the client/browser and when that code executes, it fetches some data and "injects" it

With jQuery, your rendering is 100% dynamic, meaning, you load your JS on the client/browser and when that code executes, it fetches some data and "injects" it into the DOM (technically a form of hydration). Hydration in context here means taking some HTML that was server-side rendered with JavaScript and then, in the browser, handing off subsequent rendering (in response to user interaction) to JavaScript running on the client. Think of it like those little dinosaur sponge toys that would inflate when you poured water on them. The dry sponge is your server-side rendered HTML and the interactive JavaScript is the water being poured on it.