Tech marketplaces — such as those emerging in software as a service and cloud — promise to transform tech buying with better speed and agility along with lower cost and risk. Marketplaces are still emerging and don’t represent a large percentage of total enterprise tech transactions today, but that’s changing — especially for smaller purchases that represent the long tail of spend and shadow IT. This report discusses the shift ahead and what application development and delivery (AD&D) pros need to know about this key future element of tech buying.