DIGITAL encompasses all that’s technology. This could be technology hardware such has laptops, servers, desktops, IoT devices, printers, smart phones, networking equipment, UPS’s. But digital also includes IT assets such as data and software. Data that sits on devices or in a Data Center either in the cloud or on-premise. All of which requires day to day hardware and energy to make this data accessible at your fingertips.
SUSTAINABILITY means the quality of not being harmful to the environment or depleting natural resources. This is at the core of an organization's recycling and reuse policy for end of life technology.