What is Payment Application Data Security Standard (PA-DSS) Terms and Definitions

The PA-DSS is for software developers and integrators of payment applications that store, process or transmit cardholder data as part of authorization or settlement when these applications are sold, distributed or licensed to third parties. Most card brands encourage merchants and third party agents to use payment applications that are validated independently by a PA-QSA company and accepted for listing by the PCI SSC.

Validated applications are listed at:
List of PA-DSS Validated Payment Applications