When considering integration design, what principle helps to ensure user data privacy?

Access control measures are crucial for ensuring user data privacy in integration design. This principle involves implementing strategies that restrict who can view or interact with sensitive data within an application or system. By establishing these controls, organizations can manage permissions effectively, ensuring that only authorized users have access to specific data elements. This not only protects user information from unauthorized access but also complies with various data privacy regulations and standards.

In contrast, while encapsulation of data strengthens the structure and organization of data, it primarily focuses on hiding the internal implementations rather than controlling access. Data normalization strategies are concerned with organizing data efficiently to reduce redundancy. API segregation practices involve breaking down APIs into smaller, more manageable parts, which can enhance performance but do not directly address user data privacy. Hence, access control measures stand out as the most effective principle for safeguarding user data privacy in the context of integration design.