After installing an Application Real-Time Monitoring Service (ARMS) agent for an application, ARMS begins monitoring the application. You can observe how the current application is being called by upstream applications and how it calls downstream applications on the Upstream and downstream analysis page.
Prerequisites
Application Monitoring provides a new application details page for users who have enabled the new billing mode.
If you have not enabled the new billing mode, click Switch to New Version on the Application List page to view the new application details page.
Python applications do not support upstream and downstream analysis.
An ARMS agent is installed for the application. For more information, see Application Monitoring overview.
View upstream and downstream applications
Log on to the ARMS console. In the left-side navigation pane, choose .
Select a region in the top navigation bar and click an application.
NoteIcons in the Language column indicate the application's programming language:
: Java
: Go
: Python- (Hyphen): an application monitored in Managed Service for OpenTelemetry
In the top navigation bar, choose .
Upstream (Top 50)

First row of panels: The upstream applications calling the current application are displayed based on the RED metrics (request count, error count, and average duration).
Second row of panels: The interfaces of the upstream applications calling the current application are displayed based on the RED metrics (request count, error count, and average duration).
Downstream (Top 50)

First row of panels: The downstream applications called by the current application are displayed based on the RED metrics (request count, error count, and average duration).
Second row of panels: The interfaces of the downstream applications called by the current application are displayed based on the RED metrics (request count, error count, and average duration).