Right now, I am using the Magento 2.2 version and want to allow the customer to save his/her credit information. Does it possible to store the credit card information with the Magento when the customer places an order.
Magento – Magento 2: How to store credit card with the authorize.net method
authorize.netmagento2magento2.2payment-gatewaypayment-methods
Best Answer
By default, this is not a good idea. It is not PCI compliant and can cause a mess of issues, especially if your admin panel is compromised. Authorize.net, however, does have a Customer Information Manager that does allow you to do this. It's secured and PCI compliant.
I recommend this particular extension: https://store.paradoxlabs.com/magento2-authorize-net-cim-payment-module.html. I have installed it for my customers who required this functionality and they have been very pleased with its results.