Computer software design; computer systems integration services; installation of computer software; computer software consultancy; computer software research; computer software programming services; configuration of computer software; software engineering; software development; updating of computer programs; updating of computer software; maintenance of computer software; software customisation services; testing of computer software; software creation; development of computer software application solutions; software design for others; computer software design and updating; updating and upgrading of computer software; custom design of software packages; software development in the framework of software publishing; installation and maintenance of computer programs; computer programming and software design; computer software development for others; creation, maintenance and adaptation of software; computer software technical support services; advisory services relating to computer software design; professional advisory services relating to computer software; design, development and implementation of software; design, development and programming of computer software; design and development of computer software architecture; consultancy in the field of software design; maintenance of data processing software; troubleshooting of computer hardware and software problems; software development, programming and implementation; quality control relating to computer software; debugging computer software for others.