# Interface Access Control

The `access` attribute on the `aura:interface` tag controls whether the interface can be used outside of the interface’s namespace.

Possible values are listed below.

| Modifier | Description                                                       |
| -------- | ----------------------------------------------------------------- |
| `public` | Available within your org only. This is the default access value. |
| `global` | Available in all orgs.                                            |

A component can implement an interface using the `implements` attribute on the `aura:component` tag.