Design and development of computer game software and virtual reality software; design and development of computer software for big data processing; maintenance and management of commercial web sites for others; platform as a service (PAAS) featuring computer software platforms for use in discovery commerce; providing a web hosting platform for delivery of multimedia content; consultancy services relating to software used in the field of e-commerce; maintenance of computer software used for e-commerce; maintenance of web sites for electronic commerce; development of computer platforms for e-commerce; computer programming for electronic commerce; design and development of computer game software; rental of computer game software; maintenance of computer software; development of computer platforms; provision of security services for computer networks, computer access and computerised transactions, namely, computer security services in the nature of providing authentication, issuance, validation and revocation of digital certificates; technical support services, namely, troubleshooting of computer software problems; design and writing of computer software; computer services, namely, cloud hosting provider services; providing computer programs designed to the specifications of others