Joining the conversation is Carola Lilienthal, a Software Architect and Managing Director at WPS, known for her expertise in technical debt and software maintainability. She delves into the cognitive science behind software architecture and emphasizes the importance of simplicity and modularity. Carola introduces the Modularity Maturity Index (MMI) as a tool for assessing system health. She also shares methods for improving legacy systems, fostering domain-driven design, and effectively onboarding developers in complex environments.