The ISG Index for Q1 2018 reveals a significant increase in the global commercial combined market, with an 11% year-over-year growth, surpassing $12 billion in annual contract value (ACV). While traditional sourcing declined by 6%, as-a-service contracts surged by 40%, driven primarily by strong results in the Americas and Asia-Pacific. The report also highlights varying trends across regions, with the Americas showing robust growth, while EMEA experienced a decline in ACV due to weakening traditional sourcing activity.