DoubleClick is a subsidiary of
Google which develops and provides Internet
ad serving services. Its clients include agencies, marketers (
Universal McCann,
AKQA etc.) and publishers who serve customers like
Microsoft,
General Motors,
Coca-Cola,
Motorola,
L'Oréal,
Palm, Inc.,
Apple Inc.,
Visa USA,
Nike,
Carlsberg among others. DoubleClick's headquarters is in
New York City,
United States.