42 Information technology consultation; computer systems network integration; installation, maintenance and repair of computer software; leasing of computer hardware and computer software; engineering, namely, providing engineering services to government agencies and commercial businesses; computer security consultancy; Computer services, namely, remote and on-site management of the information technology (IT) systems of others; Computer technology support services, namely, help-desk services, maintenance and parts replacement services for computer software, electronic data storage, back up and recovery services, and cyber security services; Computer technology services, namely, electronic data storage, back up and recovery, and cyber security; Computer services, namely, computer system administration for others; Testing of computers, computer hardware and computer programs; Design, planning, customization and implementation of data centers in the nature of a group of networked computer servers, comprised of racks and servers preinstalled with software, which may be transported to the user's location and then installed there, to the order and specification of others; engineering, namely, software engineering