proxy
Definitions
The authority or power to act on behalf of another person.
A person authorized to act as a substitute or representative for another.
A computer system or software that acts as an intermediary between an endpoint device and the internet.
Examples
The company used a proxy server to hide the internal IP addresses of its employees.
Since the CEO could not attend the meeting, she sent a proxy to vote on her behalf.
Synonyms
substitute delegate representative surrogate agent deputy stand-in