42 Development, installation, maintenance and repair of computer software for others in the field of office work and enterprise collaboration; Computer programming for others in the field of office work and enterprise collaboration; Software as a service (SAAS) services featuring temporary use of non-downloadable software for use in conducting secure instant messaging, web conferencing and file sharing, and for use in creating, transmitting, receiving, accessing, retrieving, managing, organizing, and synchronizing corporate e-mail and electronic calendars used in office work and enterprise collaboration; Providing platform as a service (PAAS) services featuring temporary use of non-downloadable computer software platforms for use in conducting secure instant messaging, web conferencing and file sharing, and for use in creating, transmitting, receiving, accessing, retrieving, managing, organizing, and synchronizing corporate e-mail and electronic calendars used in office work and enterprise collaboration; Cloud computing services featuring temporary use of non-downloadable computer software for conducting secure instant messaging, web conferencing and file sharing, and for use in creating, transmitting, receiving, accessing, retrieving, managing, organizing, and synchronizing corporate e-mail and electronic calendars used in office work and enterprise collaboration