# About domains

To make your AB Tasty tag work, you must set the authorized domain in your account settings. 

The tag will only run on this domain. If someone copies your tag to another domain, it won’t work. 

One domain per account ensures a faster and lighter tag execution and reporting 

### What is my domain? 

Enter the part of your site before the first slash ("/") and after any subdomains. Example: For [www.my-website.com/fr](http://www.my-website.com/fr), enter my-website.com.

### **Validity matrix**

| Input                                     | Validity | Comment                                                                                                  |
| ----------------------------------------- | -------- | -------------------------------------------------------------------------------------------------------- |
| example.com                               | yes      | The tag will execute on example.com and all its subdomains.                                              |
| sub.example.com                           | yes      | The tag will only execute on sub.example.com and corresponding subdomains (eg. eshop.sub.example.com).   |
| [www.example.com](http://www.example.com) | yes      | The tag will execute on [www.example.com](http://www.example.com) only, excluding all others subdomains. |
| <https://example.com>                     | no       | You must not input the protocol (http.s).                                                                |
| example.com/en\_GB                        | no       | You must not input the path (/xxx)                                                                       |


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