At which stage of the ML lifecycle are compliance and regulatory requirements identified?

Compliance and regulatory requirements are identified during the "Defining the business goal" stage because this is when the project's purpose, scope, and potential impact are established. Understanding these requirements early ensures the ML solution adheres to legal and ethical standards from its inception, preventing costly rework or legal issues later. Feature engineering, model training, and data collection are subsequent technical stages where these requirements are implemented and monitored, but not initially defined.