All the processing of Authorize.Net(AIM) payment gateway will be done on your domain. To use this gateway you need to have a Authorize.Net gateway account. All the card details of customer will be collected on your website. After collecting all the required data, API will be called using CURL and API will return the response data.

There is also a setting screen for Authorize.Net(AIM) gateway in admin panel where you can configure the payment gateway.

Please refer to Readme.md file in the installation package for the installation details. The installer extension is also provided with the package to make the installation an ease.