To support multiple teams working on a product simultaneously while minimizing risks, what structure should be utilized?

The tiered architecture is the most suitable structure for supporting multiple teams working on a product simultaneously while minimizing risks. This architectural approach allows for a clear separation of concerns, dividing the system into different layers or tiers, such as presentation, business logic, and data access. This separation not only facilitates parallel development but also helps isolate changes made by separate teams, reducing the risk of impacting one another's work.

When multiple teams can work on distinct tiers without interfering with each other's functionality, it enhances collaboration and accelerates development. Furthermore, since each tier can be tested independently, it contributes to higher overall quality and reliability. Each team can implement changes, conduct tests, and release updates within their own tier without the complexities that might arise from a more interdependent structure.

In comparison, continuous integration/continuous delivery is a methodology that focuses on automating the software development lifecycle but may not inherently provide the structural benefits that a tiered architecture offers for managing team collaboration. On-premises and cloud change control options refer more to environments and processes for managing changes rather than the foundational structure that enables multiple teams to work together effectively.