diff --git a/src/main/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/GerritCloudwatchReporter.java b/src/main/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/GerritCloudwatchReporter.java
index 5cc01de..bc80ddd 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/GerritCloudwatchReporter.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/GerritCloudwatchReporter.java
@@ -47,11 +47,11 @@
             .withHighResolution();
 
     config
-        .getMaybeInstanceId()
+        .getMaybeApplicationName()
         .ifPresent(
-            instanceId ->
+            applicationName ->
                 cloudWatchReporterBuilder.withGlobalDimensions(
-                    String.format("InstanceId=%s", instanceId)));
+                    String.format("ApplicationName=%s", applicationName)));
 
     if (config.getDryRun()) {
       cloudWatchReporterBuilder.withDryRun();
diff --git a/src/main/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/GerritCloudwatchReporterConfig.java b/src/main/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/GerritCloudwatchReporterConfig.java
index 62535dd..2cdf3f9 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/GerritCloudwatchReporterConfig.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/GerritCloudwatchReporterConfig.java
@@ -32,6 +32,7 @@
 
 class GerritCloudwatchReporterConfig {
   protected static final String KEY_NAMESPACE = "namespace";
+  protected static final String KEY_APPLICATION_NAME = "applicationName";
   protected static final String KEY_RATE = "rate";
   protected static final String KEY_DRYRUN = "dryRun";
   protected static final String KEY_INITIAL_DELAY = "initialDelay";
@@ -51,7 +52,7 @@
   private final Boolean dryRun;
   private final MetricFilter exclusionFilter;
   private final Boolean jvmMetrics;
-  private final Optional<String> maybeInstanceId;
+  private final Optional<String> maybeApplicationName;
 
   @Inject
   public GerritCloudwatchReporterConfig(
@@ -60,7 +61,8 @@
       @Nullable @GerritInstanceId String instanceId) {
     PluginConfig pluginConfig = configFactory.getFromGerritConfig(pluginName);
 
-    this.maybeInstanceId = Optional.ofNullable(instanceId);
+    this.maybeApplicationName =
+        Optional.ofNullable(pluginConfig.getString(KEY_APPLICATION_NAME, instanceId));
 
     this.namespace = pluginConfig.getString(KEY_NAMESPACE, DEFAULT_NAMESPACE);
 
@@ -118,7 +120,7 @@
     return (s, metric) -> !filter.test(s);
   }
 
-  public Optional<String> getMaybeInstanceId() {
-    return maybeInstanceId;
+  public Optional<String> getMaybeApplicationName() {
+    return maybeApplicationName;
   }
 }
diff --git a/src/main/resources/Documentation/config.md b/src/main/resources/Documentation/config.md
index b29d4d2..973a44d 100644
--- a/src/main/resources/Documentation/config.md
+++ b/src/main/resources/Documentation/config.md
@@ -16,19 +16,6 @@
 [here](https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/credentials.html) and
 [here](https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/setup-credentials.html)
 
-## InstanceId Dimension
-
-Gerrit can be optionally configured to have a unique identifier, the
-[instanceId](https://gerrit-review.googlesource.com/Documentation/config-gerrit.html#gerrit.instanceId),
-which represents a specific instance within a group of Gerrit instances.
-
-When the instanceId is set this plugin will hydrate all the metrics sent to CloudWatch with
-an additional dimension named `InstanceId`, populated with the value of the `gerrit.instanceId`
-configuration.
-
-This is useful as it allows to correlate cloudwatch metrics to specific instances
-they originated from.
-
 ## Metrics Reporter
 
 * `plugin.@PLUGIN@.dryRun` (Optional): the reporter will log.DEBUG the metrics,
@@ -54,6 +41,16 @@
     * AWS Docs: [Namespaces](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/cloudwatch_concepts.html#Namespace)
     * Example: "my-gerrit-metrics"
 
+* `plugin.@PLUGIN@.applicationName` (Optional): The name of the application
+  emitting metrics. this plugin will hydrate all the metrics sent to CloudWatch
+  with an additional dimension named `ApplicationName`.
+  * Type: String
+  * Default: The gerrit [instanceId](https://gerrit-review.googlesource.com/Documentation/config-gerrit.html#gerrit.instanceId), when defined. null otherwise.
+  * Example: "gerrit-uk-1"
+  * Notes: This is useful as it allows to correlate cloudwatch metrics to
+    specific instances they originated from. If not set and instanceId is not
+    configured, then metrics will not have any `ApplicationName` dimension.
+
 * `plugin.@PLUGIN@.rate` (Optional): The rate at which metrics should be fired to AWS.
     * Type: Time
     * Default: "60s"
diff --git a/src/test/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/GerritCloudwatchReporterConfigTest.java b/src/test/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/GerritCloudwatchReporterConfigTest.java
index dc00d27..7f2fd63 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/GerritCloudwatchReporterConfigTest.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/GerritCloudwatchReporterConfigTest.java
@@ -57,7 +57,7 @@
         .isEqualTo(GerritCloudwatchReporterConfig.DEFAULT_DRY_RUN);
     assertThat(reporterConfig.getJvmMetrics())
         .isEqualTo(GerritCloudwatchReporterConfig.DEFAULT_JVM_METRICS);
-    assertThat(reporterConfig.getMaybeInstanceId()).isEqualTo(Optional.empty());
+    assertThat(reporterConfig.getMaybeApplicationName()).isEqualTo(Optional.empty());
   }
 
   @Test
@@ -68,6 +68,7 @@
     globalPluginConfig.setString(GerritCloudwatchReporterConfig.KEY_INITIAL_DELAY, "20s");
     globalPluginConfig.setBoolean(GerritCloudwatchReporterConfig.KEY_DRYRUN, true);
     globalPluginConfig.setBoolean(GerritCloudwatchReporterConfig.KEY_JVM_METRICS, true);
+    globalPluginConfig.setString(GerritCloudwatchReporterConfig.KEY_APPLICATION_NAME, "appName");
 
     when(configFactory.getFromGerritConfig(PLUGIN_NAME))
         .thenReturn(globalPluginConfig.asPluginConfig());
@@ -79,7 +80,17 @@
     assertThat(reporterConfig.getRate()).isEqualTo(180);
     assertThat(reporterConfig.getDryRun()).isTrue();
     assertThat(reporterConfig.getJvmMetrics()).isTrue();
-    assertThat(reporterConfig.getMaybeInstanceId()).isEqualTo(Optional.of(gerritInstanceId));
+    assertThat(reporterConfig.getMaybeApplicationName()).isEqualTo(Optional.of("appName"));
+  }
+
+  @Test
+  public void shouldSetApplicationNameWithInstanceIdWhenNotOverridden() {
+    when(configFactory.getFromGerritConfig(PLUGIN_NAME))
+        .thenReturn(emptyGlobalPluginConfig.asPluginConfig());
+    reporterConfig =
+        new GerritCloudwatchReporterConfig(configFactory, PLUGIN_NAME, gerritInstanceId);
+
+    assertThat(reporterConfig.getMaybeApplicationName()).isEqualTo(Optional.of(gerritInstanceId));
   }
 
   @Test
diff --git a/src/test/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/MetricsReporterCloudwatchIT.java b/src/test/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/MetricsReporterCloudwatchIT.java
index 94aaf21..c4b8a3c 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/MetricsReporterCloudwatchIT.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/metricsreportercloudwatch/MetricsReporterCloudwatchIT.java
@@ -45,6 +45,7 @@
     sysModule = "com.googlesource.gerrit.plugins.metricsreportercloudwatch.GerritCloudwatchModule")
 public class MetricsReporterCloudwatchIT extends LightweightPluginDaemonTest {
   private static final String GERRIT_INSTANCE_ID = "testInstanceId";
+  private static final String APPLICATION_NAME = "testApplicationName";
   private static final String TEST_METRIC_NAME = "test/metric/name";
   private static final long TEST_METRIC_INCREMENT = 1234567L;
   private static final String TEST_JVM_METRIC_NAME = "jvm.uptime";
@@ -142,7 +143,7 @@
   @GerritConfig(name = "plugin.metrics-reporter-cloudwatch.dryrun", value = "true")
   @GerritConfig(name = "plugin.metrics-reporter-cloudwatch.rate", value = TEST_TIMEOUT)
   @GerritConfig(name = "gerrit.instanceId", value = GERRIT_INSTANCE_ID)
-  public void shouldAddInstanceIdDimensionWhenAvailable() throws Exception {
+  public void shouldAddInstanceIdAsApplicationNameDimensionWhenAvailable() throws Exception {
     InMemoryLoggerAppender dryRunMetricsOutput = newInMemoryLogger();
 
     waitUntil(
@@ -152,7 +153,27 @@
                 .anyMatch(
                     l ->
                         l.contains(
-                            String.format("Name=InstanceId, Value=%s", GERRIT_INSTANCE_ID))));
+                            String.format("Name=ApplicationName, Value=%s", GERRIT_INSTANCE_ID))));
+  }
+
+  @Test
+  @GerritConfig(name = "plugin.metrics-reporter-cloudwatch.dryrun", value = "true")
+  @GerritConfig(
+      name = "plugin.metrics-reporter-cloudwatch.applicationName",
+      value = APPLICATION_NAME)
+  @GerritConfig(name = "plugin.metrics-reporter-cloudwatch.rate", value = TEST_TIMEOUT)
+  @GerritConfig(name = "gerrit.instanceId", value = GERRIT_INSTANCE_ID)
+  public void shouldAddApplicationNameConfigValueAsDimensionWhenAvailable() throws Exception {
+    InMemoryLoggerAppender dryRunMetricsOutput = newInMemoryLogger();
+
+    waitUntil(
+        () ->
+            dryRunMetricsOutput
+                .metricsStream()
+                .anyMatch(
+                    l ->
+                        l.contains(
+                            String.format("Name=ApplicationName, Value=%s", APPLICATION_NAME))));
   }
 
   private static InMemoryLoggerAppender newInMemoryLogger() {