---
title: Maxymiser (Async) Tag Setup Guide
description: This article describes how to set up the Maxymiser (Async) tag in your Tealium iQ Tag Management account.
url: https://docs.tealium.com/client-side-tags/maxymiser-async-tag/
---
Maxymiser empowers brands to transform every digital interaction into seamless, relevant and engaging customer experiences with its cloud-based testing, personalization and cross-channel optimization solutions.

## Tag Tips

* Contact Maxymiser before using this tag to confirm that your Maxymiser library is set up to be loaded asynchronously.
* If you need to load Maxymiser synchronously, paste the Maxymiser code into `utag.sync.js` or use the Maxymiser (Sync) tag instead of this one.
* For best performance:
  * Advanced Settings: Set **Tag Timing** to **Prioritized**.
  * Move this tag to the top of your list of tags (so that it loads first).
  * Publish Settings: Enable Bundling
  * Move `utag.js` to the top of the body

* Use mapping to:
  * Disable the tag on a page-by-page basis.
  * Pass additional data to Maxymiser (must be enabled on your Maxymiser account).

## Tag Configuration

First, go to the tag marketplace and add the Maxymiser (Async) tag (Learn more about [how to add a tag](https://docs.tealium.com/manage-tags/)).

After adding the tag, configure the following settings:

* **Library URL**: The `mmcore.js` library URL provided by Maxymiser.  
Example:  
`//service.maxymiser.net/cdn/tealium/js/mmcore.js`  
This should start with `//`. Do not include `http:` or `https:`.

## Data Mappings

Mapping is the process of sending data from a [data layer variable](https://docs.tealium.com/data-layer-variables/) to the corresponding destination variable of the vendor tag. For instructions on how to map a variable to a tag destination, see [data mappings](https://docs.tealium.com/iq-tag-management/data-mappings/manage/).

The available categories are:

### Standard

| Variable                         | Description                                |
|:---------------------------------|:-------------------------------------------|
| Library URL                      | (`library_url`)                            |
| Disable Maxymiser                | (`mm_disable`)                             |
| Load Test Content Asynchronously | (`mm_async`) (Overrides default of `true`) |
| Custom                           | (`custom.myvar`)                           |