Merge pull request #299680 from jaesoni/l4-metrics-ga-prep

L4 metrics ga prep and typo correction

Author: prmerger-automator[bot]

articles/application-gateway/configuration-http-settings.md

@@ -16,7 +16,7 @@ The Backend Settings enable you to manage the configurations for backend connect
 ## Types of Backend Settings in Application Gateway
 While Portal users will only see the "Backend Settings" option, API users will have access to two types of settings. You must utilize the correct configuration, according to the protocol.
 
-* Backend HTTP settings - It is for Layer 7 proxy configurations that support HTTP, HTTPS, and WebSockets protocols.
+* Backend HTTP settings - It is for Layer 7 proxy configurations that support HTTP and HTTPS protocols.
 * Backend settings - It is for Layer 4 proxy (Preview) configurations that support TLS and TCP protocols.
 
 ---

articles/application-gateway/monitor-application-gateway-reference.md

@@ -1,7 +1,7 @@
 ---
 title: Monitoring data reference for Azure Application Gateway
 description: This article contains important reference material you need when you monitor Azure Application Gateway.
-ms.date: 03/28/2025
+ms.date: 05/12/2025
 ms.custom: horz-monitor
 ms.topic: reference
 author: greg-lindsay
@@ -109,7 +109,9 @@ https://management.azure.com/subscriptions/subid/providers/Microsoft.Network/loc
 
 ### TLS/TCP proxy metrics
 
-Application Gateway supports TLS/TCP proxy monitoring. With layer 4 proxy feature now available with Application Gateway, there are some Common metrics that apply to both layer 7 and layer 4. There are some layer 4 specific metrics. The following list summarizes the metrics are the applicable for layer 4 usage.
+The following metrics are available for monitoring Application Gateway's TLS/TCP proxy. In addition to Layer 4-specific metrics, there are several common metrics with Layer 7 (HTTP/S). For details of each, visit the complete [metrics listing](#supported-metrics-for-microsoftnetworkapplicationgateways).
+
+**Metrics that also apply to L4 proxy**
 
 - Current Connections
 - New Connections per second
@@ -118,14 +120,16 @@ Application Gateway supports TLS/TCP proxy monitoring. With layer 4 proxy featur
 - Unhealthy host count
 - Client RTT
 - Backend Connect Time
-- Backend First Byte Response Time. `BackendHttpSetting` dimension includes both layer 7 and layer 4 backend settings.
-
-For more information, see previous descriptions and the [metrics table](#supported-metrics-for-microsoftnetworkapplicationgateways).
+- Backend First Byte Response Time (`BackendHttpSetting` dimension applies to both Layer 7 and 4 backend settings).
+- Bytes Sent
+- Bytes Received
+- Compute Units
+- Capacity Units
 
-These metrics apply to layer 4 only.
+**L4 proxy-specific metrics**
 
-- **Backend Session Duration**. The total time of a backend connection. The average time duration from the start of a new connection to its termination. `BackendHttpSetting` dimension includes both layer 7 and layer 4 backend settings.
-- **Connection Lifetime**. The total time of a client connection to application gateway. The average time duration from the start of a new connection to its termination in milliseconds.
+- Backend Session Duration - The total time of a backend connection. The average time duration from the start of a new connection to its termination. `BackendHttpSetting` dimension includes both layer 7 and layer 4 backend settings.
+- Connection Lifetime - The total time of a client connection to application gateway. The average time duration from the start of a new connection to its termination in milliseconds.
 
 ### TLS/TCP proxy backend health