Ant Boobier discusses creating a product playbook at Bank of New Zealand to standardize their agile practices and development processes. They tried dual track development with two teams working separately but it led to clashes. They shifted to having one empirical track with the whole team having ownership. They created a playbook test to make it self-explanatory, endorsed by key areas, and enjoyable to read. It brings together best practices in an easy to understand framework that the team adopted and adapted. The playbook treats products like pets to question thinking and say no to features tangential to the main product.