PCI compliance hosting

Have you ever heard the term pci compliance hosting? It has something to do with making your company PCI DSS Compliance that is something else I do not understand. You may already know what pci compliance is but for me I am still confused. I need to do more research about it. I asked my husband if he knows anything about it and he said he had no idea I think he is like me. I was reading their site and just learned a little bit about them.