Your users select a realm name when logging in, so define realm names that clearly describe the user
population. For example, a realm that includes all internal employees might be named “employees,”
while a realm that includes external suppliers might be named “suppliers.”
If a realm will be referenced by mobile device users, keep the name short so that all of it is visible on the
mobile device. A Pocket PC device using standard text size, for example, can normally display a name that
is about 30 characters long, but a smart phone cannot.