Explanation
The best approach to meet the business needs is to utilize a trusted signed certificate issued by a Certification Authority (CA) to secure each connection made by the payment solution protocol via HTTPS. This will ensure that the data exchanged between the application, the payment provider, and the customer is all encrypted and secure. Additionally, this approach will help to reduce the list of controls identified in the Self-Assessment Questionnaire, as it is a secure and approved method of protecting customer data.