42 Computer programming; updating of computer software; computer software design; maintenance of computer software; updating of mobile applications (software); mobile applications (software) design; maintenance of mobile applications (software); computer systems analysis; graphic arts designing; recovery of computer data; hosting a web site for registration of participation in conferences, seminars, workshops, trade fairs and business matching opportunities; hosting a web site and home page featuring information related to conferences, seminars and workshops; hosting a web site and home page all featuring research and reference materials in the field of business, finance, news, weather, sports, entertainment, travel, shopping, computing, computer software, music, theatre, movies, hobbies, computer support education, lifestyles and general interest; computer consultancy in the field of Internet services; hosting computer sites; creating and maintaining web sites for others; platform as a service (PaaS); server hosting