diff --git a/.env.example b/.env.example
index f258852..6a69049 100644
--- a/.env.example
+++ b/.env.example
@@ -46,7 +46,7 @@ ENDPOINT_L1_SUCCESS="/success/l1"
 L1_TOKEN_EXPIRATION=60
 L1_TOKEN_HEADER_NAME=x-token
 L2_TOKEN_EXPIRATION=3600
-APPINSIGHTS_INSTRUMENTATIONKEY=foo
+APPLICATIONINSIGHTS_CONNECTION_STRING=InstrumentationKey=foo;IngestionEndpoint=http://localhost;LiveEndpoint=http://localhost
 REQUIRED_ATTRIBUTES_SERVICE_NAME=Service Name
 
 ENABLE_FULL_OPERATOR_METADATA=true
diff --git a/e2e/scenarios/basic/env.scenario b/e2e/scenarios/basic/env.scenario
index 76c29a3..8455037 100644
--- a/e2e/scenarios/basic/env.scenario
+++ b/e2e/scenarios/basic/env.scenario
@@ -96,7 +96,7 @@ ENDPOINT_L1_SUCCESS="/success/l1"
 L1_TOKEN_EXPIRATION=60
 L1_TOKEN_HEADER_NAME=x-token
 L2_TOKEN_EXPIRATION=3600
-APPINSIGHTS_INSTRUMENTATIONKEY=foo
+APPLICATIONINSIGHTS_CONNECTION_STRING=InstrumentationKey=foo;IngestionEndpoint=http://localhost;LiveEndpoint=http://localhost
 REQUIRED_ATTRIBUTES_SERVICE_NAME=Service Name
 
 ENABLE_FULL_OPERATOR_METADATA=true
diff --git a/e2e/scenarios/with-aws-s3/env.scenario b/e2e/scenarios/with-aws-s3/env.scenario
index 07405d7..ff1e1ec 100644
--- a/e2e/scenarios/with-aws-s3/env.scenario
+++ b/e2e/scenarios/with-aws-s3/env.scenario
@@ -96,7 +96,7 @@ ENDPOINT_L1_SUCCESS="/success/l1"
 L1_TOKEN_EXPIRATION=60
 L1_TOKEN_HEADER_NAME=x-token
 L2_TOKEN_EXPIRATION=3600
-APPINSIGHTS_INSTRUMENTATIONKEY=foo
+APPLICATIONINSIGHTS_CONNECTION_STRING=InstrumentationKey=foo;IngestionEndpoint=http://localhost;LiveEndpoint=http://localhost
 REQUIRED_ATTRIBUTES_SERVICE_NAME=Service Name
 
 ENABLE_FULL_OPERATOR_METADATA=true
diff --git a/e2e/scenarios/with-redis-cluster/env.scenario b/e2e/scenarios/with-redis-cluster/env.scenario
index f74b828..6ce064d 100644
--- a/e2e/scenarios/with-redis-cluster/env.scenario
+++ b/e2e/scenarios/with-redis-cluster/env.scenario
@@ -96,7 +96,7 @@ ENDPOINT_L1_SUCCESS="/success/l1"
 L1_TOKEN_EXPIRATION=60
 L1_TOKEN_HEADER_NAME=x-token
 L2_TOKEN_EXPIRATION=3600
-APPINSIGHTS_INSTRUMENTATIONKEY=foo
+APPLICATIONINSIGHTS_CONNECTION_STRING=InstrumentationKey=foo;IngestionEndpoint=http://localhost;LiveEndpoint=http://localhost
 REQUIRED_ATTRIBUTES_SERVICE_NAME=Service Name
 
 ENABLE_FULL_OPERATOR_METADATA=true
diff --git a/src/server.ts b/src/server.ts
index ce9aca2..2af29d9 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -7,9 +7,12 @@ import { getConfigOrThrow } from "./utils/config";
 import { logger } from "./utils/logger";
 
 const config = getConfigOrThrow();
-const appInsights = initAppInsights(config.APPINSIGHTS_INSTRUMENTATIONKEY, {
-  disableAppInsights: config.APPINSIGHTS_DISABLED
-});
+const appInsights = initAppInsights(
+  config.APPLICATIONINSIGHTS_CONNECTION_STRING,
+  {
+    disableAppInsights: config.APPINSIGHTS_DISABLED
+  }
+);
 
 // eslint-disable-next-line functional/immutable-data
 appInsights.context.tags[appInsights.context.keys.cloudRole] =
diff --git a/src/utils/appinsights.ts b/src/utils/appinsights.ts
index 76b89d1..191ee84 100644
--- a/src/utils/appinsights.ts
+++ b/src/utils/appinsights.ts
@@ -13,9 +13,9 @@ import * as appInsights from "applicationinsights";
  * - Realtime API metrics
  */
 export const initAppInsights = (
-  instrumentationKey: string,
+  connectionString: string,
   config: ApplicationInsightsConfig = {}
 ): appInsights.TelemetryClient => {
-  startAppInsights(instrumentationKey, config);
+  startAppInsights(connectionString, config);
   return appInsights.defaultClient;
 };
diff --git a/src/utils/config.ts b/src/utils/config.ts
index b5a8629..7f0dc9e 100644
--- a/src/utils/config.ts
+++ b/src/utils/config.ts
@@ -391,7 +391,7 @@ export type IConfigUtility = t.TypeOf<typeof IConfigUtility>;
 export const IConfigUtility = t.intersection([
   t.interface({
     APPINSIGHTS_DISABLED: t.boolean,
-    APPINSIGHTS_INSTRUMENTATIONKEY: NonEmptyString,
+    APPLICATIONINSIGHTS_CONNECTION_STRING: NonEmptyString,
     SERVER_PORT: NonNegativeInteger,
     isProduction: t.boolean
   }),