Software authoring; Software development in the framework of software publishing; Business technology software consultation services; Computer software consulting; Computer software installation and maintenance; Computer programming and software design; Consulting services in the field of software as a service (SAAS); Copying of computer software; Creating, maintaining, and modernizing computer software; Customizing computer software; Developing customized software for others; Development of software for secure network operations; Installation of computer software; Periodic upgrading of computer software for others; Programming of computer software for others; Software as a service (SAAS) services featuring software for telecommunication providers; Testing of computer software; Writing and updating computer software