Lall will take over the day-to-day running of the agency and will report directly to Dan Saxby, the regional managing director for Asia-Pacific.
The new agency, which will open for business in May, has been set up with the remit of handling the Indian operations of CNN International and Sony Ericsson. At the same time, Iris is opening a similar office in Sydney.
Lall joined Saatchis in 2005 after spending 15 years at JWT Delhi. He began his career in 1990 at Ulka.