A person or entity registered, licensed or otherwise authorized to use the title "Architect" and to practice architecture in a State or Territory.  In the State of Queensland you must be registered with the Board of Architects of Queensland to use the title of 'Architect' and/or to offer 'architectural services'.

The most basic definition of an "Architect" is a professional who is qualified to design and provide advice - both aesthetic and technical - on built objects in our public and private landscapes. But this definition barely scratches the surface of an Architect's role. Architects serve as trusted advisors.  Their role is holistic, blending diverse requirements and disciplines in a creative process, while serving the public interest and addressing health and safety matters. (Royal Architectural Institute of Canada)

IS 10 Skill Sets and Competencies of a Practising Architect