Erik wants to provide company-purchased devices, but his organization prefers to provide end-users with choices among devices that can be managed and maintained centrally. What mobile device deployment model best fits this need?

CYOD, or choose your own device, allows users to choose a device that is corporate-owned and paid for. Choices may be limited to a set of devices, or users may be allowed to choose essentially any device depending on the organization’s deployment decisions.
BYOD allows users to bring their own device, whereas COPE, or corporate-owned, personally enabled, provides devices to users that they can then use for personal use.
VDI uses a virtual desktop infrastructure as an access layer for any security model where specialized needs or security requirements may require access to remote desktop or application services.