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In this course section,

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we are going to leave the world of saving data or files.

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I mean, we will, technically, still save data and files

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but we'll not dive into different storage techniques

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or anything like this.

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Instead, in this course section,

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we're going to take a closer look at the HTTP requests

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that are sent to the server to do something.

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Because we're going to dive into Ajax

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and JavaScript-driven HTTP requests.

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And this very likely sounds extremely cryptic,

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and it's not clear what I mean by that.

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And therefore, of course, in this course section,

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we are going to explore what exactly Ajax

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and sending HTTP requests with JavaScript means

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and why we might need these features.

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And of course, we're not going to stop at the what and why,

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but instead in this course section,

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like in every other course section as well I guess,

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you are also going to learn how to use this feature.

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And we're going to learn

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how we can send JavaScript-driven HTTP requests,

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how we can send our own requests with our own data

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once we know why we might want to do that.

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And we're of course also going to explore how we can then

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handle responses that are being sent back from the server

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and how we can also handle possible errors

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we might be facing.

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So, plenty of things to cover.

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Let's dive right in and let's understand

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what exactly this course section is about.