Real Dictionary

outsource
verb: If a company outsources work or things, it pays workers from outside the company to do the work or supply the things.

outsource in American English
to transfer (certain manufacturing operations, administrative activities, etc.) to outside contractors, esp. so as to reduce one's operating costs
transitive verb: to purchase (goods) or subcontract (services) from an outside company

outsource in British English
to subcontract (work) to another company