advisory services relating to computer software; computer security services (design and development of secure computer hardware, software and systems); computer software consultancy; computer software design; computer software development; computer software engineering; computer software programming services; consultancy in the design and development of computer software; design of computer software; development of computer software; hosting of software as a service (saas); installation of computer software; installation of middleware (software); software as a service (saas); updating of computer software; upgrading of computer software