This sub-class includes: •activities of providing expertise in the field of information technologies such as writing, modifying, testing and/or supporting software, designing the structure and content of, and/or writing the computer code necessary to create, implement, develop and/or customise software applications (including updates and/or patches), databases and/or webpages •customising of software and/or applications, i.e., modifying and/or configuring an existing software and/or applications so that it is functional within the clients' information system environment •development of mobile applications •development of immersive media (including augmented reality, mixed reality and virtual reality) for non-games (e.g., building information systems, healthcare applications)