For an application in a one-app-per-service architecture, the application flow map displays a Cross-BT Hovercard showing calls from upstream and downstream business transactions representing endpoints of other services.

This enables you to isolate the service which is the origin of any problem that arises, to one of three possibilities:

• The service whose endpoint is a BT that you are monitoring (your service).
• An upstream or downstream service, that your service communicates with through cross-BT calls.
• Yet another upstream or downstream service, that your service communicates with indirectly through a chain of cross-BT calls between several services.

To access the Cross-BT Hovercard, select the line representing either the incoming or outgoing cross-application call, and then select the Business Transactions tab.