If you haven't already, you should check out our blog for more information on Business Data Security.
POS on Cloud is hosted on Amazon EC2 Cloud servers which provide data redundancy, load balancing, and system backups.
We do not store any credit card data, and use tokenization combined with point to point encryption to mask each card swiped or key entered into our POS. This way, no sensitive cardholder data is transmitted unencrypted. We use standards that comply with the United States Government's published requirements for information classified as 'Secret' for all sensitive information.