Ville Reijonen, a seasoned Agilist and co-author of books on Scrum and machine control patterns, discusses the pitfalls of code ownership silos in Agile teams. He reveals how these divisions lead to fear and mistrust, hindering effective collaboration. Ville shares actionable strategies to rebuild trust, such as adopting internal open-source models and ensemble programming. He also highlights the significance of robust testing practices for fostering a culture of shared ownership and improving software quality, emphasizing a broader perspective for Scrum Masters through insights from Peter Drucker’s work.