What is a organizational device considered to be?
In the context of MDM (Mobile Device Management), an "organizational device" is a device (mobile phone, laptop, tablet, etc.) that is owned and controlled by the organization (usually a company, school, etc.) that has legal ownership of it.

The alternative is BYOD (Bring Your Own Device) where the end user brings their personal device to access the organization's IT resources (i.e. email, calendar, shared files, etc.)