SAN DIEGO--(BUSINESS WIRE)--Gartner, Inc. (NYSE:IT): When:   September 9 - 11   Where: Hilton San Diego Bayfront, San Diego, CA   Theme: Delivering Great Customer Experiences at the Speed of Digital Business Details: Gartner Customer 360 Summit provides IT leaders, CRM professionals and business executives with the insights, tools, technologies and strategies they need to deliver superior customer experiences across every point of engagement. From leveraging disruptive technology to executing o