Management and support for a fleet of technology devices. For example, an IT service that manages all the computers and mobile devices assigned to employees at a firm. 

Technologies to secure information technology environments. For example, a security platform that monitors for threats and automatically patches vulnerabilities. 

Digital infrastructure such as systems, mobile and wired networking. a combined set of hardware, software, networks, facilities, etc. (including all of the information technology related equipment) used to develop, test, deliver, monitor, control, or support IT services. 

 Refurbishment is the distribution of products, usually electronics and electricals, that have been previously returned to a manufacturer or vendor for various reasons, like not sold in the market or new launch of a product. Refurbished products are normally tested for functionality and defects before they are sold to the public. They are repaired by the original manufacturer and resold.