Online advertising is also termed as Online marketing, Internet advertising or Web advertising. In this marketing, process internet is used to provide marketing information to consumers. Online advertisement agency in Kolkata is the most effective for all type of businesses to explore their new business era and find new customers. It is the new marketing strategy that uses the internet as a medium to deliver messages to the right customers. An exponential increase in the online advertising has been seen from the 1990s to the present day.