What focus should a team have when dealing with a complex set of subsystems for product integration?

In the context of managing complex subsystems for product integration, enhancing unit testing is crucial. Unit testing serves as the foundation for verifying the functionality of the smallest parts of a system—in this case, individual subsystems or components—before they are integrated into a larger system. This focus ensures that each component works as intended in isolation, which can help identify and address issues early in the development process.

By prioritizing unit testing, the team can ensure quality and reliability at the individual level, which significantly reduces the risk of failure during integration. It lays a solid groundwork that aids in easier identification of faults when components are combined and helps to streamline the integration process as each unit confirms its operational integrity.

This approach contrasts with the idea of increasing documentation efforts, which, while important, may not directly address the immediate needs of ensuring that individual units function correctly when integrated. Similarly, focusing solely on user interface design or limiting integration testing could compromise the integrity of the final product. Overall, enhancing unit testing aligns well with best practices in Agile and Scrum methodologies, where continuous improvement and feedback loops are essential for delivering high-quality software.