> For the complete documentation index, see [llms.txt](https://karansingh.gitbook.io/aws-saa-c02/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://karansingh.gitbook.io/aws-saa-c02/route53/untitled.md).

# Overview

* Amazon Route 53 is a **highly available and scalable Domain Name System (DNS)** web service.

You can use Route 53 to **perform three main functions in any combination:**

* **Register domain names**

  * Your website needs a name, such as example.com; **Route 53 lets you register a domain name**.

* **Route internet traffic to the resources for your domain**
  * When a user opens a web browser and enters your domain name (example.com) or subdomain name (acme.example.com) in the address bar, **Route 53 helps connect the browser with your website or web application**.<br>

* **Check the health of your resources**
  * **Route 53 sends automated requests over the internet to a resource, such as a web server, to verify that it's reachable, available, and functional**.