# Add-On (Extensions or Plug-ins)

Is the tools you can install a new feature (ex: SMS) and use inside your website, or the SDKs you can implement into your portal, so if you want to let your users to login in with facebook you need to install the facebook Add-On box to your website, and continue with the steps.

Every single Add-on has it own configuration, so always recommend let our IT guy to handle such a thing