Distributed tracing, also called distributed request tracing, is a method used to profile and monitor applications, especially those built using a microservices architecture. Distributed tracing helps pinpoint where failures occur and what causes poor performance.
With Vs Code, You can run both api's with using 'Start Both' launch configuration. This config will build and start both projects and lunch multiplication server into the browser.
from terminal, you can also build and start projects seperately.