This IDC Energy Insights Perspective discusses the impact of cloud services on the development of smart buildings. Cloud delivery of energy management solutions is a growing trend in the smart buildings marketplace. According to IDC, cloud services are "consumer and business products, services, and solutions delivered and consumed in real time over a network (most often, the Internet)." The convergence of information technology and building automation is delivering increasingly sophisticated smart building solutions to the market. The IT architecture and reliance on analytics and data management that define these smart building solutions make cloud services an ideal fit. Facilities management has long been separated from information technology, however, so the question for the smart building industry is whether the building operators and key decision makers are familiar with and willing to invest in cloud-based energy management solutions. This document gives building management decision makers some perspective on the trend toward cloud delivery of smart building energy management solutions and key hurdles and opportunities around integrating these solutions.