The modern data center is inundated with several thousand connected devices and sensors. With operational technologies (OT), facilities equipment, IT equipment, and IOT devices each generating tens or hundreds of pieces of data, owners, operators, and manufacturers are all trying to use this information to more intelligently manage, control and optimize their data center operations. Data center infrastructure management (DCIM) tools provide visibility across both the management and operations layers to more holistically optimize the cost and performance of the data center. This book depicts how a well-implemented and maintained DCIM system helps safely maximize the efficient use of power, cooling, and space resources through a comprehensive connective framework. This framework proposes necessary data sets, naming conventions, monitoring and integration points, and key metrics required for judging the effectiveness of the overall DCIM system needed to simplify and accelerate deployment while helping to ensure the value of DCIM is realized throughout the operational phase of the facility. One of the core tenants of this connective framework is the introduction of the DCIM Compliance for IT Equipment (CITE). For the first time in the industry, CITE highlights the core set of telemetry, that should be promoted within IT equipment designs, so as to enable the full capabilities of integrated DCIM solutions. This book is the fourteenth in the ASHRAE Datacom Series, authored by ASHRAE Technical Committee 9.9, Mission Critical Facilities, Data Centers, Technology Spaces, and Electronic Equipment. The series provides comprehensive treatment of Datacom cooling and related subjects.