Accept and store customer information, including payment methods, with Authorize.net's Customer Information Manager(CIM).

• Securely accept customer payments using the Accept.js tokenization when collecting all payments.
• Provide customers option of storing payment information for future transactions.
• Stored customer card information can be used for orders created in the frontend or backend.
• New payments can be authorize or authorize and capture.
• Authorized payments can be captured online during invoice creation.
• Full and partial refund support when creating credit memos.
• Support for Multiple Shipping Addresses
• Supports for Magento InstantPurchase

In your Magento 2 root directory run
composer require tnw/module-authorizenetcim
bin/magento setup:upgrade

The configuration can be found in the Magento 2 admin panel under
Store->Configuration->Sales->Payment Methods->Authorize.net CIM

Test Mode requires your checkout and admin pages use the HTTPS protocol even in your staging development environments. The correct version of Accetp.js, https://jstest.authorize.net/v1/Accept.js, is loaded when the module is in test mode, but it will error if you attempt to use it over HTTP. You do NOT need a valid SSL certificate for testing.

Integration with Authorize.Net CIM - Wiki

Open Software License v. 3.0