Update docs/product/tracing/index.mdx

Author: lizokm

docs/product/tracing/index.mdx

@@ -29,7 +29,7 @@ In Sentry, a "transaction" is a specific unit that represents any event that you
 
 ## How to Use Tracing in Sentry
 
-To get the most out of tracing in Sentry, you'll need to instrument both the frontend and backend of your application with Sentry's SDK. Once this is done, there are several places where you can view and interact with tracing data:
+If you instrument Sentry for a single part of your app (just the frontend for example), looking at a trace will provide useful context for debugging issues within that app or service. But to get the most out of tracing in Sentry, you'll need to instrument the frontend, the backend, and any services in-between with Sentry's SDK. Once this is done, there are several places where you can view and interact with tracing data:
 
 ### Traces to Trace View