> For the complete documentation index, see [llms.txt](https://docs.exoclick.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.exoclick.com/advertisers/campaigns/third-party-adserving.md).
# Third Party Ad-Serving
Third party ad serving allows advertisers to host, deliver and track events from their own server, instead of relying exclusively on ExoClick to perform these tasks. On a campaign level, this is achieved by taking advantage of **HTML Banner tags** and **iframe URLs**.
Some of the advantages of HTML Banner tags and iframe URLs are that most of the recurrent campaign updates, like changing and updating creatives, can be performed straight from the advertiser's own server. In addition, this approach is also helpful because it allows for automation, making tasks like tracking, A/B testing and segmentation easier to manage.
## Inserting an HTML Banner tag or iframe URL into a campaign
If **HTML / iframes** are allowed in your account, head to **Step 2 - Ads** in your campaign creation window. From there, choose HTML Banners or iframe URL and click on the **+ AD VARIATIONS** button to add the tag or URL to your campaign.
Currently, ExoClick uses **HTML banner** tags for **all banner formats**, and **iframe URL** for **Interstitial** and **Native ads**.
HTML banners will accept HTML tags as an input. You can either create your creative right inside the input box by using HTML tags or you can add an iframe pointing to your host page:
With the iframe URL you just need to provide the source of the iframe:
## Registering Clicks and Conversions in HTML campaigns
As HTML Banner and Iframe URL campaigns are served through a third party server, the Admin Panel will not register any ***clicks*** or ***conversions*** by default. If you want to track these events, you’ll need to follow these steps:
### Step 1: Add the {click\_url} and {conversions\_tracking} parameters to your HTML/iFrame code
Add {click\_url} and {conversions\_tracking} to the ad tag, as shown in this example:
```js
```
### Step 2: Add to your host page the code to detect the {click\_url} value
Your host page needs to be able to detect the {click\_url} value in order to generate the click and the {conversions\_tracking} string in order to register the conversion in the Admin Panel. The way in which you fetch these values depends on the programming language your host page is built with. Here are some examples:
**Javascript:**
```js
```
In this script, you can add any variable that you might need to track through your iframe, provided that you specify the parameter from the URL that preceedes this value. For instance, if you want to track **Sub IDs**, you can use the following code:
```js
```
Sub ID tracking is a way to add extra information to your links so you can understand more about where your website traffic is coming from. By adding Sub ID parameters to your URLs, you can track specific details like which ad, platform, or campaign brought a visitor to your site.
**PHP:**
```php
if (substr($click_url, -1) !== ';') {
$click_url .= ';';
}
```
The final result of the link should be:
```js
{click_url}https://ad.third-party-server-ad.com/click?tag={conversions_tracking}
```
When a user clicks on this ad, our server will automatically remove the {click\_URL} value and redirect the visitor to the page, while registering the click and providing the details from the conversion.
---
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