diff --git a/internal-api/src/main/java/datadog/trace/api/ConfigCollector.java b/internal-api/src/main/java/datadog/trace/api/ConfigCollector.java
index f4cfda6877b..6e4ebc0969c 100644
--- a/internal-api/src/main/java/datadog/trace/api/ConfigCollector.java
+++ b/internal-api/src/main/java/datadog/trace/api/ConfigCollector.java
@@ -27,6 +27,11 @@ public void put(String key, Object value, ConfigOrigin origin) {
     collected.put(key, setting);
   }
 
+  public void put(String key, Object value, ConfigOrigin origin, String configId) {
+    ConfigSetting setting = ConfigSetting.of(key, value, origin, configId);
+    collected.put(key, setting);
+  }
+
   public void putAll(Map<String, Object> keysAndValues, ConfigOrigin origin) {
     // attempt merge+replace to avoid collector seeing partial update
     Map<String, ConfigSetting> merged =
diff --git a/internal-api/src/main/java/datadog/trace/api/ConfigSetting.java b/internal-api/src/main/java/datadog/trace/api/ConfigSetting.java
index b688d5b477d..9b94b444a02 100644
--- a/internal-api/src/main/java/datadog/trace/api/ConfigSetting.java
+++ b/internal-api/src/main/java/datadog/trace/api/ConfigSetting.java
@@ -11,19 +11,26 @@ public final class ConfigSetting {
   public final String key;
   public final Object value;
   public final ConfigOrigin origin;
+  /** The config ID associated with this setting, or {@code null} if not applicable. */
+  public final String configId;
 
   private static final Set<String> CONFIG_FILTER_LIST =
       new HashSet<>(
           Arrays.asList("DD_API_KEY", "dd.api-key", "dd.profiling.api-key", "dd.profiling.apikey"));
 
   public static ConfigSetting of(String key, Object value, ConfigOrigin origin) {
-    return new ConfigSetting(key, value, origin);
+    return new ConfigSetting(key, value, origin, null);
   }
 
-  private ConfigSetting(String key, Object value, ConfigOrigin origin) {
+  public static ConfigSetting of(String key, Object value, ConfigOrigin origin, String configId) {
+    return new ConfigSetting(key, value, origin, configId);
+  }
+
+  private ConfigSetting(String key, Object value, ConfigOrigin origin, String configId) {
     this.key = key;
     this.value = CONFIG_FILTER_LIST.contains(key) ? "<hidden>" : value;
     this.origin = origin;
+    this.configId = configId;
   }
 
   public String normalizedKey() {
@@ -99,12 +106,15 @@ public boolean equals(Object o) {
     if (this == o) return true;
     if (o == null || getClass() != o.getClass()) return false;
     ConfigSetting that = (ConfigSetting) o;
-    return key.equals(that.key) && Objects.equals(value, that.value) && origin == that.origin;
+    return key.equals(that.key)
+        && Objects.equals(value, that.value)
+        && origin == that.origin
+        && Objects.equals(configId, that.configId);
   }
 
   @Override
   public int hashCode() {
-    return Objects.hash(key, value, origin);
+    return Objects.hash(key, value, origin, configId);
   }
 
   @Override
@@ -117,6 +127,8 @@ public String toString() {
         + stringValue()
         + ", origin="
         + origin
+        + ", configId="
+        + configId
         + '}';
   }
 }
diff --git a/internal-api/src/main/java/datadog/trace/bootstrap/config/provider/ConfigProvider.java b/internal-api/src/main/java/datadog/trace/bootstrap/config/provider/ConfigProvider.java
index 1edeb072c80..338cc40ff08 100644
--- a/internal-api/src/main/java/datadog/trace/bootstrap/config/provider/ConfigProvider.java
+++ b/internal-api/src/main/java/datadog/trace/bootstrap/config/provider/ConfigProvider.java
@@ -79,7 +79,7 @@ public String getString(String key, String defaultValue, String... aliases) {
       String value = source.get(key, aliases);
       if (value != null) {
         if (collectConfig) {
-          ConfigCollector.get().put(key, value, source.origin());
+          ConfigCollector.get().put(key, value, source.origin(), getConfigIdFromSource(source));
         }
         return value;
       }
@@ -198,7 +198,7 @@ private <T> T get(String key, T defaultValue, Class<T> type, String... aliases)
         T value = ConfigConverter.valueOf(sourceValue, type);
         if (value != null) {
           if (collectConfig) {
-            ConfigCollector.get().put(key, sourceValue, source.origin());
+            ConfigCollector.get().put(key, value, source.origin(), getConfigIdFromSource(source));
           }
           return value;
         }
@@ -247,6 +247,7 @@ public List<String> getSpacedList(String key) {
   public Map<String, String> getMergedMap(String key, String... aliases) {
     Map<String, String> merged = new HashMap<>();
     ConfigOrigin origin = ConfigOrigin.DEFAULT;
+    String configId = null;
     // System properties take precedence over env
     // prior art:
     // https://docs.spring.io/spring-boot/docs/1.5.6.RELEASE/reference/html/boot-features-external-config.html
@@ -256,11 +257,12 @@ public Map<String, String> getMergedMap(String key, String... aliases) {
       Map<String, String> parsedMap = ConfigConverter.parseMap(value, key);
       if (!parsedMap.isEmpty()) {
         origin = sources[i].origin();
+        configId = getConfigIdFromSource(sources[i]);
       }
       merged.putAll(parsedMap);
     }
     if (collectConfig) {
-      ConfigCollector.get().put(key, merged, origin);
+      ConfigCollector.get().put(key, merged, origin, configId);
     }
     return merged;
   }
@@ -268,6 +270,7 @@ public Map<String, String> getMergedMap(String key, String... aliases) {
   public Map<String, String> getMergedTagsMap(String key, String... aliases) {
     Map<String, String> merged = new HashMap<>();
     ConfigOrigin origin = ConfigOrigin.DEFAULT;
+    String configId = null;
     // System properties take precedence over env
     // prior art:
     // https://docs.spring.io/spring-boot/docs/1.5.6.RELEASE/reference/html/boot-features-external-config.html
@@ -278,11 +281,12 @@ public Map<String, String> getMergedTagsMap(String key, String... aliases) {
           ConfigConverter.parseTraceTagsMap(value, ':', Arrays.asList(',', ' '));
       if (!parsedMap.isEmpty()) {
         origin = sources[i].origin();
+        configId = getConfigIdFromSource(sources[i]);
       }
       merged.putAll(parsedMap);
     }
     if (collectConfig) {
-      ConfigCollector.get().put(key, merged, origin);
+      ConfigCollector.get().put(key, merged, origin, configId);
     }
     return merged;
   }
@@ -290,6 +294,7 @@ public Map<String, String> getMergedTagsMap(String key, String... aliases) {
   public Map<String, String> getOrderedMap(String key) {
     LinkedHashMap<String, String> merged = new LinkedHashMap<>();
     ConfigOrigin origin = ConfigOrigin.DEFAULT;
+    String configId = null;
     // System properties take precedence over env
     // prior art:
     // https://docs.spring.io/spring-boot/docs/1.5.6.RELEASE/reference/html/boot-features-external-config.html
@@ -299,11 +304,12 @@ public Map<String, String> getOrderedMap(String key) {
       Map<String, String> parsedMap = ConfigConverter.parseOrderedMap(value, key);
       if (!parsedMap.isEmpty()) {
         origin = sources[i].origin();
+        configId = getConfigIdFromSource(sources[i]);
       }
       merged.putAll(parsedMap);
     }
     if (collectConfig) {
-      ConfigCollector.get().put(key, merged, origin);
+      ConfigCollector.get().put(key, merged, origin, configId);
     }
     return merged;
   }
@@ -312,6 +318,7 @@ public Map<String, String> getMergedMapWithOptionalMappings(
       String defaultPrefix, boolean lowercaseKeys, String... keys) {
     Map<String, String> merged = new HashMap<>();
     ConfigOrigin origin = ConfigOrigin.DEFAULT;
+    String configId = null;
     // System properties take precedence over env
     // prior art:
     // https://docs.spring.io/spring-boot/docs/1.5.6.RELEASE/reference/html/boot-features-external-config.html
@@ -323,11 +330,12 @@ public Map<String, String> getMergedMapWithOptionalMappings(
             ConfigConverter.parseMapWithOptionalMappings(value, key, defaultPrefix, lowercaseKeys);
         if (!parsedMap.isEmpty()) {
           origin = sources[i].origin();
+          configId = getConfigIdFromSource(sources[i]);
         }
         merged.putAll(parsedMap);
       }
       if (collectConfig) {
-        ConfigCollector.get().put(key, merged, origin);
+        ConfigCollector.get().put(key, merged, origin, configId);
       }
     }
     return merged;
@@ -499,6 +507,13 @@ private static Properties loadConfigurationFile(ConfigProvider configProvider) {
     return properties;
   }
 
+  private static String getConfigIdFromSource(Source source) {
+    if (source instanceof StableConfigSource) {
+      return ((StableConfigSource) source).getConfigId();
+    }
+    return null;
+  }
+
   public abstract static class Source {
     public final String get(String key, String... aliases) {
       String value = get(key);
diff --git a/internal-api/src/main/java/datadog/trace/bootstrap/config/provider/stableconfig/StableConfig.java b/internal-api/src/main/java/datadog/trace/bootstrap/config/provider/stableconfig/StableConfig.java
index 58fa3c4f826..f7129309102 100644
--- a/internal-api/src/main/java/datadog/trace/bootstrap/config/provider/stableconfig/StableConfig.java
+++ b/internal-api/src/main/java/datadog/trace/bootstrap/config/provider/stableconfig/StableConfig.java
@@ -17,7 +17,7 @@ public final class StableConfig {
 
   public StableConfig(Object yaml) {
     Map<Object, Object> map = (Map<Object, Object>) yaml;
-    this.configId = String.valueOf(map.get("config_id"));
+    this.configId = map.get("config_id") == null ? null : String.valueOf(map.get("config_id"));
     this.apmConfigurationDefault =
         unmodifiableMap(
             (Map<String, Object>) map.getOrDefault("apm_configuration_default", emptyMap()));
diff --git a/telemetry/src/main/java/datadog/telemetry/TelemetryRequestBody.java b/telemetry/src/main/java/datadog/telemetry/TelemetryRequestBody.java
index 62fac7d9afe..f84a4331fd7 100644
--- a/telemetry/src/main/java/datadog/telemetry/TelemetryRequestBody.java
+++ b/telemetry/src/main/java/datadog/telemetry/TelemetryRequestBody.java
@@ -230,6 +230,9 @@ public void writeConfiguration(ConfigSetting configSetting) throws IOException {
     bodyWriter.name("value").value(configSetting.stringValue());
     bodyWriter.setSerializeNulls(false);
     bodyWriter.name("origin").value(configSetting.origin.value);
+    if (configSetting.configId != null) {
+      bodyWriter.name("config_id").value(configSetting.configId);
+    }
     bodyWriter.endObject();
   }
 
diff --git a/telemetry/src/test/groovy/datadog/telemetry/EventSourceTest.groovy b/telemetry/src/test/groovy/datadog/telemetry/EventSourceTest.groovy
index 5a492c18171..5da3f0a3ea1 100644
--- a/telemetry/src/test/groovy/datadog/telemetry/EventSourceTest.groovy
+++ b/telemetry/src/test/groovy/datadog/telemetry/EventSourceTest.groovy
@@ -56,7 +56,7 @@ class EventSourceTest extends DDSpecification{
 
     where:
     eventType             | eventQueueName            | eventInstance
-    "Config Change"       | "configChangeQueue"       | new ConfigSetting("key", "value", ConfigOrigin.ENV)
+    "Config Change"       | "configChangeQueue"       | ConfigSetting.of("key", "value", ConfigOrigin.ENV)
     "Integration"         | "integrationQueue"        | new Integration("name", true)
     "Dependency"          | "dependencyQueue"         | new Dependency("name", "version", "type", null)
     "Metric"              | "metricQueue"             | new Metric()