Service for connecting professionals with a view to organizing professional events via a platform; service reservation for business travel via a platform; service for connecting client companies with service providers; establishing connection between commercial and professional contacts; commercial intermediary service in the framework of connecting various professionals with clients; compilation of statistics; compilation of statistics; collection of statistics; preparation of statistics; statistical analysis and reports; drawing up of statistical information; preparation of statistical data; presentation of statistical reports; billing service; event marketing service; commercial business management; online advertising; advertising and marketing; advertising of commercial web sites; travel promotion [advertising]; advertising on the Internet for others; dissemination of commercial advertisements and announcements; advertising through all public communication means; business information via an online directory on the Internet; providing commercial and business contact information via Internet; event marketing service; presentation of companies on the Internet and other media; promotion of third-party goods via the Internet; commercial intermediary service; systematization and compilation of data in a central file intended for reservation of professional premises; referencing of websites for commercial or advertising purposes.