42 Design and development of computer hardware and software; software authoring; software development, programming and implementation; installation, maintenance and upgrading of software; configuration of computer systems and networks; provision in the nature of leasing and rental of data centre facilities; computer software technical support services, namely, troubleshooting of computer software problems, diagnosing server, computer hardware and software problems, installation, administration and troubleshooting of web and database applications; provision of technical support in the operation of computing networks, namely, monitoring the web sites of others to improve their scalability and performance, troubleshooting of computer software problems, diagnosing server, computer hardware and software problems, installation, administration and troubleshooting of web and database applications; Software as a service (SAAS) services featuring software for use in database management, for hosting software for use by others for database management, for hosting cloud-based software of others, rental of software; server hosting, Software as a service (SAAS) services featuring software using artificial intelligence for use in software development and database management; hosting of access control as a service (ACAAS) servers and software services featuring software for database management, for hosting software for use by others for database management, for hosting cloud-based software of others, for enforcing, restricting and controlling access privileges of users of computing resources for cloud, mobile or network resources based on assigned credentials; platform as a service (PAAS) featuring computer software platforms for database management, for hosting software for use by others for database management, for hosting cloud-based software of others; infrastructure as a service (IAAS) services, namely, hosting cloud-based software for use by others, hosting servers for use by others; it security, protection and restoration, namely, data security consultancy, computer virus protection services, maintenance and updating of computer software relating to computer security and prevention of computer risks, computer security threat analysis for protecting data, restricting unauthorized access to hard drives and computer networks; Technical support services, namely, troubleshooting in the nature of diagnosing computer hardware problems using software; computer security system monitoring services, namely, monitoring of computer security systems by remote access to ensure proper functioning; data decryption and encryption of information, messages and data; authentication of information, messages and data in the field of computer security; quality control for others and authentication services using technology to authenticate user identity for network and database access; information, consultancy and advisory services relating to all of the aforesaid services, namely, computer security consultancy, advisory service relating to computer software, technical advisory services relating to computer programs and networks, information technology consulting relating to computer network and software design, computer software consulting, computer technology and network consultancy; rental of computer software for use in accessing cloud computing databases