PCI Compliance

[Ollie]

I need to fill out a self-assessed questionnaire (SAQ) for PCI compliance and I have a question: Is AbanteCart  PCI DSS validated?

Here's an article from Wikipedia on this topic: https://en.wikipedia.org/wiki/Payment_Card_Industry_Data_Security_Standard

If not PCI DSS validated, what do merchants need to do on their end?

NOTE: I have a strong SSL certificate and use Authorize.net for payment gateway.

[abantecart]

We have followed the PCI guidelines, but we did not file for official certification.