Dictionary.com
definitions

O2O

or O-to-O, o·2o, o-to-o

[oh-too-oh]
  1. online-to-offline (denoting business transactions in which the consumer finds and pays for a product or service online but receives it at the store or other business).
  2. offline-to-online (denoting business transactions in which the consumer finds and receives a product or service at a store or other business but pays for it online, as with a smartphone).

Origin of O2O

patterned on B2B,B2C
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018