With multitenancy, multiple customers share the same physical hardware and systems. With the nature of a cloud environment and how it writes data across diverse systems that are shared by others, the process of eDiscovery becomes much more complicated. Administrators cannot pull physical drives or easily isolate which data to capture. They not only have to focus on which data they need to collect, while ensuring they find all of it, but they also have to make sure that other data is not accidently collected and exposed along with it. Measured service is the aspect of a cloud where customers only pay for the services they are actually using, and for the duration of their use. Portability refers to the ease with which an application or service can be moved among different cloud providers. Broad network access refers to the nature of cloud services being accessed via the public Internet, either with or without secure tunneling technologies. None of these concepts would pertain to eDiscovery.