42 Design and development of computer software application solutions; design and development of computer software solutions; design and development of mobile applications; design and development of software for modifying computer programmes and software; design and development of software for optimising computer programmes and software; design and development of software for enhancing the capabilities and performance of computer programmes and software; design and development of software for extending the functionality of computer programmes and software; design and development of software for integration with computer programmes and software; software as a service [SaaS] featuring software for modifying computer programmes and software; software as a service [SaaS] featuring software for optimising computer programmes and software; software as a service [SaaS] featuring software for enhancing the capabilities and performance of computer programmes and software; software as a service [SaaS] featuring software for extending the functionality of computer programmes and software; software as a service [SaaS] featuring software for integration with computer programmes and software; providing web-based access to applications and services through a web operating system or portal interface over a network, including but not limited to the internet; advice, information and consultancy relating to these services.