What is the main feature of the 'Show Where Used' in AtomSphere?

The main feature of 'Show Where Used' in AtomSphere is its ability to display all components that reference the selected component. This functionality is essential for developers as it provides insight into how interconnected different components are within an integration process.

By using 'Show Where Used,' a developer can easily identify all the various connections and dependencies related to a specific component. This is particularly useful for maintaining and managing integration flows, as it helps in understanding the impact of changes made to one component across the entire system. It also aids in troubleshooting by allowing the developer to see which components might be affected if modifications or deletions are planned.

Additional features, like archiving or providing version history, serve different purposes and do not focus on displaying dependencies or references among components. Therefore, the capability to show component relationships is what primarily distinguishes this function in AtomSphere, making the option that states it displays all components that reference the selected component the correct answer.