# Origin

## Overview <a href="#tong-quan" id="tong-quan"></a>

**Origin** in CDN is the original server that contains all the original data of the website. This is where the original files such as images, videos, HTML, CSS, JavaScript, etc. are stored. All changes on the website originate from Origin before being distributed to the CDN's servers (Edge servers).

## **Detail** <a href="#chi-tiet" id="chi-tiet"></a>

Currently, vCDN supports 3 types of Origin: **HTTP Origin, S3 Origin and Host Origin** . Specifically, please refer to the table below.

| **Origin Type** | **Describe**                                                                | **For example**                                                       | **Type of support service**                                                       |
| --------------- | --------------------------------------------------------------------------- | --------------------------------------------------------------------- | --------------------------------------------------------------------------------- |
| **HTTP Origin** | Fetch content from a web server or application via the HTTP/HTTPS protocol. | A website hosted at `https://example.com`.                            | <ul><li>Web Accelerator</li><li>Object Download</li><li>Video On Demand</li></ul> |
| **S3 Origin**   | Fetch content directly from S3 - compatible object storage services.        | An S3 bucket has a URL like `https://bucket-name.s3.amazonaws.com`.   | <ul><li>Object Download</li><li>Video On Demand</li></ul>                         |
| **Host Origin** | Data is served from a specific server or IP specified by the user.          | Server at IP address `192.168.1.1`or domain `cdn-origin.example.com`. | <ul><li>Object Download</li><li>Video On Demand</li></ul>                         |


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.vngcloud.vn/vng-cloud-document/vcdn/chi-tiet-tinh-nang/origin.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.