42 Development, design, hosting, implementation, installation, rental, maintenance, care and enhancement and updates of software for e-commerce platforms; Platform as a service (PAAS) featuring computer software platforms for web site hosting services relating to installation, maintenance, repair and renovation of installations for heating, cooling, water supply, sanitary installations and sanitation equipment;Software as a service (SAAS) services featuring software for installation, maintenance, repair and renovation of installations for heating, cooling, water supply, sanitary installations and sanitation equipment;Information technology support services, namely, computer security services in the nature of recovery of computer data relating to installation, maintenance, repair and renovation of installations for heating, cooling, water supply, sanitary installations and sanitation equipment, computer security services in the nature of computer security threat analysis for protection of computer data relating to installation, maintenance, repair and renovation of installations for heating, cooling, water supply, sanitary installations and sanitation equipment;development, design, implementation, installation, rental, maintenance and provision of further development and updates regarding software, mobile applications and computer algorithms in the field of piping technology, installation technology, building technology, sanitary engineering, industrial plant construction, shipbuilding, municipal utilities;providing temporary use of online non-downloadable cloud computing software for use in database management in relation to technical and pipeline-related building equipment in the field of installation, maintenance, repair and renovation of installations for heating, cooling, water supply, sanitary installations and sanitation equipment;computer services, namely, cloud hosting provider services; technological services, namely,technological analysis for determining hygiene requirements in the field of technical and pipeline-related building equipment;consultancy relating to technical quality monitoring of technical and pipeline-related building equipment; engineering services in the field of development and implementation of energy optimization measures in building technology; development, design, hosting, implementation, installation, rental, maintenance and updating of customized internet software platforms with following functions: knowledge transfer and training, contact and interaction, product presentations, e-commerce, shop functionalities, self-services, administration and processing of service requests, customer retention, customer consulting, customer management, order and delivery information; consultancy and information services in the field of computer software design