The definition of BYOD is "bring your own device," meaning you use your own phone or computer at your workplace to access company info and applications.
An example of BYOD is a startup company that asks employees to use their own cell phones to make business calls.
(Bring Your Own Device) Refers to employees who bring their personal devices to work, whether laptop, smartphone or tablet, in order to interface to the corporate network. A huge amount of company data is accessed using employee-owned equipment. See CYOD, Windows To Go, Appleization, BYOC and IT consumerization.