diff --git a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/LinkedService.json b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/LinkedService.json
index 22a1f81ad6e5..356ece9ed6ad 100644
--- a/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/LinkedService.json
+++ b/specification/datafactory/resource-manager/Microsoft.DataFactory/stable/2018-06-01/entityTypes/LinkedService.json
@@ -1029,7 +1029,12 @@
         "authenticationType": {
           "type": "object",
           "x-ms-format": "dfe-string",
-          "description": "The authentication type to connect to Dynamics server. 'Office365' for online scenario, 'Ifd' for on-premises with Ifd scenario, 'AADServicePrincipal' for Server-To-Server authentication in online scenario. Type: string (or Expression with resultType string)."
+          "description": "The authentication type to connect to Dynamics server. 'Office365' for online scenario, 'Ifd' for on-premises with Ifd scenario, 'AADServicePrincipal' for Server-To-Server authentication in online scenario, 'Active Directory' for Dynamics on-premises with IFD. Type: string (or Expression with resultType string)."
+        },
+        "domain": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "The Active Directory domain that will verify user credentials. Type: string (or Expression with resultType string)."
         },
         "username": {
           "type": "object",
@@ -1086,7 +1091,8 @@
       "enum": [
         "Office365",
         "Ifd",
-        "AADServicePrincipal"
+        "AADServicePrincipal",
+        "Active Directory"
       ],
       "x-ms-enum": {
         "name": "DynamicsAuthenticationType",
@@ -1145,7 +1151,12 @@
         "authenticationType": {
           "type": "object",
           "x-ms-format": "dfe-string",
-          "description": "The authentication type to connect to Dynamics CRM server. 'Office365' for online scenario, 'Ifd' for on-premises with Ifd scenario, 'AADServicePrincipal' for Server-To-Server authentication in online scenario. Type: string (or Expression with resultType string)."
+          "description": "The authentication type to connect to Dynamics CRM server. 'Office365' for online scenario, 'Ifd' for on-premises with Ifd scenario, 'AADServicePrincipal' for Server-To-Server authentication in online scenario, 'Active Directory' for Dynamics on-premises with IFD. Type: string (or Expression with resultType string)."
+        },
+        "domain": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "The Active Directory domain that will verify user credentials. Type: string (or Expression with resultType string)."
         },
         "username": {
           "type": "object",
@@ -1248,7 +1259,12 @@
         "authenticationType": {
           "type": "object",
           "x-ms-format": "dfe-string",
-          "description": "The authentication type to connect to Common Data Service for Apps server. 'Office365' for online scenario, 'Ifd' for on-premises with Ifd scenario. 'AADServicePrincipal' for Server-To-Server authentication in online scenario. Type: string (or Expression with resultType string)."
+          "description": "The authentication type to connect to Common Data Service for Apps server. 'Office365' for online scenario, 'Ifd' for on-premises with Ifd scenario. 'AADServicePrincipal' for Server-To-Server authentication in online scenario, 'Active Directory' for Dynamics on-premises with IFD. Type: string (or Expression with resultType string)."
+        },
+        "domain": {
+          "type": "object",
+          "x-ms-format": "dfe-string",
+          "description": "The Active Directory domain that will verify user credentials. Type: string (or Expression with resultType string)."
         },
         "username": {
           "type": "object",
diff --git a/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/LinkedService.json b/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/LinkedService.json
index 523cf94b76a2..88c676889ffb 100644
--- a/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/LinkedService.json
+++ b/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/entityTypes/LinkedService.json
@@ -916,7 +916,11 @@
         },
         "authenticationType": {
           "type": "object",
-          "description": "The authentication type to connect to Dynamics server. 'Office365' for online scenario, 'Ifd' for on-premises with Ifd scenario, 'AADServicePrincipal' for Server-To-Server authentication in online scenario. Type: string (or Expression with resultType string)."
+          "description": "The authentication type to connect to Dynamics server. 'Office365' for online scenario, 'Ifd' for on-premises with Ifd scenario, 'AADServicePrincipal' for Server-To-Server authentication in online scenario, 'Active Directory' for Dynamics on-premises with IFD. Type: string (or Expression with resultType string)."
+        },
+        "domain": {
+          "type": "object",
+          "description": "The Active Directory domain that will verify user credentials. Type: string (or Expression with resultType string)."
         },
         "username": {
           "type": "object",
@@ -970,7 +974,8 @@
       "enum": [
         "Office365",
         "Ifd",
-        "AADServicePrincipal"
+        "AADServicePrincipal",
+        "Active Directory"
       ],
       "x-ms-enum": {
         "name": "DynamicsAuthenticationType",
@@ -1023,7 +1028,11 @@
         },
         "authenticationType": {
           "type": "object",
-          "description": "The authentication type to connect to Dynamics CRM server. 'Office365' for online scenario, 'Ifd' for on-premises with Ifd scenario, 'AADServicePrincipal' for Server-To-Server authentication in online scenario. Type: string (or Expression with resultType string)."
+          "description": "The authentication type to connect to Dynamics CRM server. 'Office365' for online scenario, 'Ifd' for on-premises with Ifd scenario, 'AADServicePrincipal' for Server-To-Server authentication in online scenario, 'Active Directory' for Dynamics on-premises with IFD. Type: string (or Expression with resultType string)."
+        },
+        "domain": {
+          "type": "object",
+          "description": "The Active Directory domain that will verify user credentials. Type: string (or Expression with resultType string)."
         },
         "username": {
           "type": "object",
@@ -1117,7 +1126,11 @@
         },
         "authenticationType": {
           "type": "object",
-          "description": "The authentication type to connect to Common Data Service for Apps server. 'Office365' for online scenario, 'Ifd' for on-premises with Ifd scenario. 'AADServicePrincipal' for Server-To-Server authentication in online scenario. Type: string (or Expression with resultType string)."
+          "description": "The authentication type to connect to Common Data Service for Apps server. 'Office365' for online scenario, 'Ifd' for on-premises with Ifd scenario. 'AADServicePrincipal' for Server-To-Server authentication in online scenario, 'Active Directory' for Dynamics on-premises with IFD. Type: string (or Expression with resultType string)."
+        },
+        "domain": {
+          "type": "object",
+          "description": "The Active Directory domain that will verify user credentials. Type: string (or Expression with resultType string)."
         },
         "username": {
           "type": "object",