diff --git a/detectors/node/opentelemetry-resource-detector-azure/src/detectors/AzureAppServiceDetector.ts b/detectors/node/opentelemetry-resource-detector-azure/src/detectors/AzureAppServiceDetector.ts
index 8fe785fa82..430899b81c 100644
--- a/detectors/node/opentelemetry-resource-detector-azure/src/detectors/AzureAppServiceDetector.ts
+++ b/detectors/node/opentelemetry-resource-detector-azure/src/detectors/AzureAppServiceDetector.ts
@@ -26,6 +26,7 @@ import {
   WEBSITE_SITE_NAME,
   WEBSITE_SLOT_NAME,
   CLOUD_RESOURCE_ID_RESOURCE_ATTRIBUTE,
+  FUNCTIONS_VERSION,
 } from '../types';
 import {
   CloudProviderValues,
@@ -49,7 +50,8 @@ class AzureAppServiceDetector implements DetectorSync {
   detect(): IResource {
     let attributes = {};
     const websiteSiteName = process.env[WEBSITE_SITE_NAME];
-    if (websiteSiteName) {
+    const isAzureFunction = !!process.env[FUNCTIONS_VERSION];
+    if (websiteSiteName && !isAzureFunction) {
       attributes = {
         ...attributes,
         [SemanticResourceAttributes.SERVICE_NAME]: websiteSiteName,
diff --git a/detectors/node/opentelemetry-resource-detector-azure/test/detectors/AzureAppServiceDetector.test.ts b/detectors/node/opentelemetry-resource-detector-azure/test/detectors/AzureAppServiceDetector.test.ts
index 9c74ecf7d4..46796d3a6a 100644
--- a/detectors/node/opentelemetry-resource-detector-azure/test/detectors/AzureAppServiceDetector.test.ts
+++ b/detectors/node/opentelemetry-resource-detector-azure/test/detectors/AzureAppServiceDetector.test.ts
@@ -17,6 +17,8 @@
 import * as assert from 'assert';
 import { azureAppServiceDetector } from '../../src/detectors/AzureAppServiceDetector';
 import { SemanticResourceAttributes } from '@opentelemetry/semantic-conventions';
+import { azureFunctionsDetector } from '../../src';
+import { detectResourcesSync } from '@opentelemetry/resources';
 
 describe('AzureAppServiceDetector', () => {
   let originalEnv: NodeJS.ProcessEnv;
@@ -38,7 +40,9 @@ describe('AzureAppServiceDetector', () => {
     process.env.WEBSITE_RESOURCE_GROUP = 'test-resource-group';
     process.env.WEBSITE_OWNER_NAME = 'test-owner-name';
 
-    const resource = azureAppServiceDetector.detect();
+    const resource = detectResourcesSync({
+      detectors: [azureFunctionsDetector, azureAppServiceDetector],
+    });
     assert.ok(resource);
     const attributes = resource.attributes;
     assert.strictEqual(
@@ -88,7 +92,9 @@ describe('AzureAppServiceDetector', () => {
     process.env.WEBSITE_HOME_STAMPNAME = 'test-home-stamp';
     process.env.WEBSITE_OWNER_NAME = 'test-owner-name';
 
-    const resource = azureAppServiceDetector.detect();
+    const resource = detectResourcesSync({
+      detectors: [azureFunctionsDetector, azureAppServiceDetector],
+    });
     assert.ok(resource);
     const attributes = resource.attributes;
     assert.strictEqual(
@@ -123,7 +129,9 @@ describe('AzureAppServiceDetector', () => {
     process.env.WEBSITE_RESOURCE_GROUP = 'test-resource-group';
     delete process.env.WEBSITE_OWNER_NAME;
 
-    const resource = azureAppServiceDetector.detect();
+    const resource = detectResourcesSync({
+      detectors: [azureFunctionsDetector, azureAppServiceDetector],
+    });
     assert.ok(resource);
     const attributes = resource.attributes;
     assert.strictEqual(
diff --git a/detectors/node/opentelemetry-resource-detector-azure/test/detectors/AzureFunctionsDetector.test.ts b/detectors/node/opentelemetry-resource-detector-azure/test/detectors/AzureFunctionsDetector.test.ts
index 9e14426090..2918f245f5 100644
--- a/detectors/node/opentelemetry-resource-detector-azure/test/detectors/AzureFunctionsDetector.test.ts
+++ b/detectors/node/opentelemetry-resource-detector-azure/test/detectors/AzureFunctionsDetector.test.ts
@@ -16,7 +16,10 @@
 
 import * as assert from 'assert';
 import { azureFunctionsDetector } from '../../src/detectors/AzureFunctionsDetector';
+import { azureAppServiceDetector } from '../../src/detectors/AzureAppServiceDetector';
 import { SemanticResourceAttributes } from '@opentelemetry/semantic-conventions';
+import { detectResourcesSync } from '@opentelemetry/resources';
+import { AZURE_APP_SERVICE_STAMP_RESOURCE_ATTRIBUTE } from '../../src/types';
 
 describe('AzureFunctionsDetector', () => {
   let originalEnv: NodeJS.ProcessEnv;
@@ -35,7 +38,9 @@ describe('AzureFunctionsDetector', () => {
     process.env.FUNCTIONS_EXTENSION_VERSION = '~4';
     process.env.WEBSITE_MEMORY_LIMIT_MB = '1000';
 
-    const resource = azureFunctionsDetector.detect();
+    const resource = detectResourcesSync({
+      detectors: [azureFunctionsDetector, azureAppServiceDetector],
+    });
     assert.ok(resource);
     const attributes = resource.attributes;
     assert.strictEqual(
@@ -66,5 +71,16 @@ describe('AzureFunctionsDetector', () => {
       attributes[SemanticResourceAttributes.FAAS_VERSION],
       '~4'
     );
+
+    // Should not detect app service values
+    assert.strictEqual(
+      attributes[SemanticResourceAttributes.SERVICE_INSTANCE_ID],
+      undefined
+    );
+
+    assert.strictEqual(
+      attributes[AZURE_APP_SERVICE_STAMP_RESOURCE_ATTRIBUTE],
+      undefined
+    );
   });
 });