42 Certification and assessment services relating to the sustainability of buildings; environmental assessment services; hosting of platforms on the internet; software as a service (SaaS) featuring software platforms for environmental rating services and for sharing information in the field of real estate, office space, workspace and meeting rooms; environmental assessment services relating to buildings; provision of information about the environmental sustainability and efficiency of buildings; providing temporary use of non-downloadable computer software for searching, retrieving, viewing, booking, renting and leasing of real estate, office space, workspace and meeting rooms; hosting of an interactive web portal that allows users to create, edit and share information in the field of real estate, office space, workspace and meeting rooms; hosting of an interactive web portal that allows users to make or manage reservations relating to the rental of real estate, office space, workspace and meeting rooms; information, advisory and consultancy services relating to all of the aforesaid services.