"Our partnership with GroupM will benefit clients to reach over 100 million people in India, 84 million on mobile both smartphone and feature phone and custom audiences within the 100 million in urban and rural India," said Kirthiga Reddy, head of Facebook India.

Reddy added, "We are excited about this wide-ranging collaboration which combines the strength of the world's best global advertising platform with GroupM's marketleading position to deliver personalised marketing at scale."