Developed by WARC, the GMI is a monthly indicator of the state of the global marketing industry based on current conditions among practitioners. An index value of 50.0 indicates no change, below 50.0 indicates decline and above 50.0 indicates growth.
Five months on from the decline first seen in April, mobile’s index value rose from 51.9 in August to 60.5 in September, whilst digital’s 59.8 was...