Which metrics are crucial for monitoring application performance in Foundry?

Monitoring application performance in Foundry requires an understanding of how users interact with the application and the efficiency of data processing. The correct choice identifies response time, data processing speed, and user engagement as key metrics.

Response time is critical because it directly affects user experience; if an application responds slowly, users may become frustrated and disengaged. Data processing speed is essential for ensuring that the application processes information quickly, providing users with timely insights and maintaining overall productivity. User engagement reflects how effectively the application retains users and keeps them interacting with its features; high levels of engagement often indicate that the application is meeting user needs effectively.

The other options highlight various metrics that may have merit in different contexts but do not align as closely with the fundamental goals of monitoring application performance in Foundry. For example, while the cost of storage and user retention can be relevant for strategic business planning, they do not directly measure application performance in the same immediate manner as the chosen metrics do.