Gartner, Inc. is a global research and advisory firm providing insights, advice, and tools for leaders in IT, Finance, HR, Customer Service and Support, Legal and Compliance, Marketing, Sales, and Supply Chain functions across the world. They are a member of the S&P 500. Its headquarters are in Stamford, Connecticut, United States. The firm changed its name from Gartner Group, Inc to Gartner in 2000.