Infrastructure engineering ensures that the IT infrastructure is sufficiently robust, scalable, and efficient to deliver the integrated services underlying the physical environment that supports the processes, physical resources, and operators required for developing, integrating, operating, and sustaining IT applications and support services. Physical resources include facilities, hardware, software, and tools. Operators include engineers, programmers, administrators, and help/service desk personnel. Infrastructure engineering support objectives ensure that a reliable, consistent level of service is available to infrastructure customers and IT service consumers—both human and machine.

Infrastructure operations address the day-to-day management and maintenance of IT services, systems, and applications, as well as the infrastructure, the geographic location, the facilities in which they are housed, and the energy, and hardware usage.