Adoption of virtualization and cloud computing is not slowing down, and neither are the challenges facing businesses looking to migrate to the cloud. At the top of the list for many firms is maintaining security and compliance when moving from physical to virtual and cloud environments. Though an update of the PCI DSS (Payment Card Industry Data Security Standard) regulations is forthcoming and the PCI Security Standards Council has a special interest group looking at virtualization and how that maps to PCI, the council does not plan to release separate guidance on cloud computing. This means that businesses looking at the cloud may not get much detailed guidance on what to do. However, there are multiple sources for those searching for advice. With that in mind, eWEEK has compiled a list of the most important steps your business can take to make sure PCI compliance does not fall to the backburner of your plans for virtual, public and private cloud environments.