— managers, who are involved in planning and managing product, system and/or service development projects, who are to be informed on the human-centred design approach and on guidance on software ergonomics;

— developers, who will apply the guidance in these documents during the development process (either directly, based on training, or by using tools and style guides which incorporate the guidance);

— user interface design roles (including interaction designers, information architects, user interface designers, visual designers and content creators), who will apply the guidance in these documents during the creation and design process (either directly, based on training, or by using tools and style guides which incorporate the guidance);

— user researchers, who are responsible for identifying user needs and inform context of use of a product, system or service;

— evaluators, who are responsible for ensuring that products, systems or services meet the recommendations contained in these documents;

— buyers, who will reference these documents in contracts during product procurement;

— designers of user interface development tools and style guides to be used by user interface designers and developers.