Information Technology: Key Attributes of Essential Federal Mission-Critical Acquisitions, Report to Congressional Requesters [open pdf - 9MB]
From the Highlights: "The acquisition of IT [information technology] systems has presented challenges to federal agencies. Accordingly, in 2015 GAO [Government Accountability Office] identified the management of IT acquisitions and operations as a high-risk area, a designation it retains today. GAO was asked to report on federal IT acquisitions. GAO's specific objective was to identify essential mission-critical IT acquisitions across the federal government and determine their key attributes."
Government Accountability Office: http://www.gao.gov/