diff --git a/windows/security/threat-protection/TOC.md b/windows/security/threat-protection/TOC.md
index c3243e4a9c..2882b9ae0f 100644
--- a/windows/security/threat-protection/TOC.md
+++ b/windows/security/threat-protection/TOC.md
@@ -438,8 +438,14 @@
 ##### [Threat protection reports](microsoft-defender-atp/threat-protection-reports.md)
 ##### [Machine health and compliance reports](microsoft-defender-atp/machine-reports.md)
 
-#### [Interoperability]()
+#### [Partners & APIs]()
 ##### [Partner applications](microsoft-defender-atp/partner-applications.md)
+##### [Connected applications](microsoft-defender-atp/connected-applications.md)
+##### [API explorer](microsoft-defender-atp/api-explorer.md)
+##### [API usage overview](microsoft-defender-atp/)
+
+
+
 
 #### [Manage machine configuration]()
 ##### [Ensure your machines are configured properly](microsoft-defender-atp/configure-machines.md)
diff --git a/windows/security/threat-protection/microsoft-defender-atp/api-explorer.md b/windows/security/threat-protection/microsoft-defender-atp/api-explorer.md
new file mode 100644
index 0000000000..674e2659d6
--- /dev/null
+++ b/windows/security/threat-protection/microsoft-defender-atp/api-explorer.md
@@ -0,0 +1,22 @@
+---
+title: API explorer in Microsoft Defender ATP  
+ms.reviewer: 
+description: 
+keywords:
+search.product: eADQiWindows 10XVcnh
+search.appverid: met150
+ms.prod: w10
+ms.mktglfcycl: deploy
+ms.sitesec: library
+ms.pagetype: security
+ms.author: mjcaparas
+author: mjcaparas
+ms.localizationpriority: medium
+manager: dansimp
+audience: ITPro
+ms.collection: M365-security-compliance 
+ms.topic: conceptual
+---
+
+# API explorer
+With the API explorer you can quickly get started with trying out 
\ No newline at end of file
diff --git a/windows/security/threat-protection/microsoft-defender-atp/connected-applications.md b/windows/security/threat-protection/microsoft-defender-atp/connected-applications.md
new file mode 100644
index 0000000000..036bdfafa7
--- /dev/null
+++ b/windows/security/threat-protection/microsoft-defender-atp/connected-applications.md
@@ -0,0 +1,28 @@
+---
+title: Connected applications in Microsoft Defender ATP   
+ms.reviewer: 
+description: View connected partner applications to Microsoft Defender ATP
+keywords: partners, applications, third-party, connections, sentinelone, lookout, bitdefender, corrata, morphisec, paloalto, ziften, better mobile
+search.product: eADQiWindows 10XVcnh
+search.appverid: met150
+ms.prod: w10
+ms.mktglfcycl: deploy
+ms.sitesec: library
+ms.pagetype: security
+ms.author: mjcaparas
+author: mjcaparas
+ms.localizationpriority: medium
+manager: dansimp
+audience: ITPro
+ms.collection: M365-security-compliance 
+ms.topic: conceptual
+---
+
+# Connected applications in Microsoft Defender ATP
+View the list of applications that are connected to your instance of Microsoft Defender ATP.
+
+From this page you'll be able to see details about connected applications such as last seen activity, the number of requests from the application, and 30-day request trends.
+
+It also allows you to jump to the application settings page where....
+
+