AI Economics: Rethinking Metrics & Operating Models

Dr Amantha Imber is an organisational psychologist and founder of the award-winning behaviour change consultancy Inventium. She has worked with companies such as Google, Apple, Disney, LEGO, Coca-Cola, and Microsoft to help boost productivity, innovation and wellbeing.

In 2021, Amantha was the first Australian to win the Thinkers50 Innovation Award (described by the Financial Times as the ‘Oscars for Management Thinking’).

In 2025, Amantha was recognised at the Australian AI Awards, where she won AI Consultant of the Year and the AI Excellence Award - the latter chosen from the highest-scoring individual winners across all categories to recognise the top performer of the year.

Amantha is also the host of the number one ranking business podcast How I Work, which has had over 6 million downloads, where she interviews some of the world’s most successful people about their habits, strategies, and rituals.

Amantha’s thoughts have appeared in Harvard Business Review, The New York Times, Forbes, and Fast Company and she is the author of four bestselling books, including international bestseller Time Wise and The Health Habit. Her latest book The Energy Game is out now.

David Walker was appointed Westpac Group’s Chief Technology Officer in August 2019. Since then, he is leading Westpac through its technology transformation - simplifying and merging the bank, building 4th gen cloud-native applications, establishing and operating evergreen platforms, leading Westpac’s AI technology, and building a culture of passionate and forward-thinking tech and emerging talent.

David began his technology career in 1987 as a software engineer, focusing on coding complex systems. After a decade of evolving his software engineering craft, David founded a data science consulting. Over the following decade, it became the number one expert data insights company in Australia and Southeast Asia.

For the last 15 years, David has held executive roles in large, complex organisations across the APAC region. Prior to joining Westpac, David was part of the leadership team of Singaporean bank, DBS. In his ten years there, David helped transform DBS from a traditional bricks and mortar bank with little brand presence or recognition outside Singapore, to being recognised as the ‘Best Bank in the World’ and the ‘Best Digital Bank in the World’ by leading global financial publication Euromoney.