testing of computer programs; computer software development; testing of computers; software engineering; testing of computer installations; development of computer software application solutions; computer software engineering; development of computer software; maintenance of computer software; computer software consultancy; installation of computer software; technical diagnostic testing services; computer software design; technical testing services; testing of computing equipment; development of software; updating of computer software; installation of middleware (software); design of computer software; computer software advisory services; computer security services (testing and risk assessment of computer networks); installation and maintenance of computer software; information technology (it) services (computer hardware, software and peripherals design and technical consultancy); software development in the framework of software publishing; repair of computer software; scientific testing services; development of testing methods; software creation