42 technical design, planning, simulating, modelling, quality evaluation, analysing and comparing data centres, and computer, telecommunications, data storage, power, environmental control, protection and security systems; analysis of data centres and of computer, telecommunications, data storage, power, environmental control, protection and security systems to assure compliance with industry standards; technical consultation in the field of data centre engineering, namely, testing and evaluation of computer, telecommunications, data storage, power, environmental control, protection and security systems to improve performance and efficiency of such systems; computer security consultancy, namely, information security risk management for data centres and of computer, telecommunications, data storage, power, environmental control, protection and security systems; providing technical information in the field of computer systems, telecommunications technology, data security systems, and environmental control systems for facilities housing data centres, via reports and technical project studies; design and development of computer hardware, software, firmware and programs; computer programming; leasing and rental of computers, computer hardware, computer firmware, computer software and computer systems; maintenance of computer software; updating of computer software; computer project management services; computer security consultancy, advisory and information services in the field of data centres, and computer, telecommunications, data storage, power, environmental control, protection and security systems; computer software consultancy, advisory and information services in the field of data centres, and computer, telecommunications, data storage, power, environmental control, protection and security systems; technical research advisory services relating to the use of energy; scientific consultancy in the field of energy-saving; energy auditing. recording data for others on optical, digital and magnetic media for electronic storage in the field of energy consumption in buildings; scientific testing, analysis and evaluation of the energy efficiency of buildings and of data centres, namely, energy measurement to improve energy efficiency; computer security testing, analysis and evaluation services, namely, scanning and penetration testing of data centres, computer hardware, software, firmware and programs, and computer, telecommunications, data storage, power, environmental control, protection and security systems to assess information security vulnerability; technical consultation in the field of data centres, namely, testing analysis and evaluation of computer hardware, software, firmware and programs, and to computer, telecommunications, data storage, power, environmental control, protection and security systems to improve performance and efficiency of such systems; testing, analysis and evaluation services for data centres, computer hardware, software, firmware and programs, and computer, telecommunications, data storage, power, environmental control, protection and security systems, to assure compliance with industry standards