42 Testing of computer and information systems, by pressuring these systems with an increasingly growing transaction volume, to determine the upper barriers of the transaction volume these systems can handle; technical analysis of computer processes and computer system processes concerning determining possible bottlenecks in computer and information systems through a simulation model; consultancy and drafting of expert technical surveys relating to the testing of computer and information systems; computer programming, computer development, namely, software development, hardware development and computer system performance engineering; computer engineering services and consultancy related thereto; perfective and adaptive maintenance of computer software, namely, updating computer software for others; computing services, namely, data automation and collection service using proprietary software to evaluate, analyze and collect service data; computer system engineering, computer performance management, computer performance engineering, computer system performance management, computer system performance engineering; informatics services, namely, engineering of information systems; design, development, updating, programming and installation of computer software; installing and implementation of computer software with third parties for a correct functioning of the (ICT) information and communication technology infrastructure, namely, the infrastructure of hardware and computer systems; computing services, namely, analysis and interpretation of data with regard to (ICT) information and communication technology infrastructure, namely, the infrastructure of hardware and computer systems; afore-mentioned services all for the purpose of improving the functioning of (ICT) information and communication technology infrastructures, namely, improving the infrastructure of hardware and computer systems; controlling services with regard to technical network management, namely, computer performance management, computer system performance management and computer capacity management; technical surveying in the field of (ICT) information and communication technology infrastructure, namely, the infrastructure of hardware and computer systems; computer system analysis; testing of computer software and computer hardware; integration of computer software in existing data processing systems; adjustment of computer software to the standards of the users, namely, customization of computer software; services of computer programming specialists; creation of technical strategies, concepts and solutions in the field of (ICT) information and communication technology, namely, in the field of data automation, computer system engineering, computer performance management, computer performance engineering, computer system performance management, computer system performance engineering; consultancy and information related to the afore-mentioned (ICT) information and communication technology services, namely, (ICT) information and communication technology infrastructure, data automation, computer system engineering, computer performance management, computer performance engineering, computer system performance management and computer system performance engineering; providing information online in the field of (ICT) information and communication technology