42 Advice and consultancy in the field of telecommunication technology, information technology and with regard to design of homepages and Internet sites; computer engineering; engineering of applications for computer systems for large and medium-sized companies; technical project studies in the fields of open data portals, database management and smart cities data management; expert appraisal for commissioning of telecommunication terminals, of national or international database servers; creation and development of Internet projects, namely, creation and development of Web sites and cloud platforms for third parties, creation of development of open data portals and smart cities portals; development of data processing programs; conversion of computer programs and data, other than physical conversion; conversion of data or documents from physical to electronic media; recovery of computer data; design, creation, hosting and maintenance of computer sites for others; preparation, design, writing, development, customization, integration, installation, maintenance, updating and/or rental of software and software packages; design and development of computers; software as a service (SAAS) services featuring software for the creation and installation of computers and cloud platforms, sharing and exchange of data for enterprises, local authorities and administrations as well as for planning their resources, the management of the data of enterprises, local authorities and administrations, database management, database management, data processing, data preparation and data interactive visualization, data exploration and publication; hosting of software applications for others; programming for computers; recovery of computer data; rental of application software, particularly for management of projects on extranets partially open to company suppliers and customers; programming for computers and for multimedia equipment; technological assistance in the field of information technology, namely, technical project studies in the fields of open data portals, database management and smart cities data management, creation and development of Internet projects, namely, open data portals and smart cities initiatives, advice regarding computer hardware and software, the Internet and intranet, management of information systems and computer networks for others, development in the nature of design of computer and telecommunication systems, development of data processing programs and database reconstitution; information, technical assistance and consultancy services in the aforesaid fields, namely, monitoring technological functions, technological consulting in the field of information technology and providing engineering information in the field of design and development of computer hardware and software for the pooling, the exchange and the use of data