Merge branch 'master' of https://github.com/MicrosoftDocs/azure-docs-pr into v-dele-1645361-004

Author: DennisLee-DennisLee

.openpublishing.redirection.json

@@ -34101,6 +34101,21 @@
       "redirect_url": "/azure/active-directory-b2c/tutorial-create-tenant",
       "redirect_document_id": false
     },
+    {
+      "source_path": "articles/active-directory/authentication/concept-mfa-get-started.md",
+      "redirect_url": "/azure/active-directory/fundamentals/concept-fundamentals-mfa-get-started",
+      "redirect_document_id": true
+    },
+    {
+      "source_path": "articles/active-directory/conditional-access/concept-conditional-access-block-legacy-authentication.md",
+      "redirect_url": "/azure/active-directory/fundamentals/concept-fundamentals-block-legacy-authentication",
+      "redirect_document_id": true
+    },
+    {
+      "source_path": "articles/active-directory/conditional-access/concept-conditional-access-security-defaults.md",
+      "redirect_url": "/azure/active-directory/fundamentals/concept-fundamentals-security-defaults",
+      "redirect_document_id": true
+    },
     {
       "source_path": "articles/multi-factor-authentication/end-user/multi-factor-authentication-end-user-app-passwords.experimental.md",
       "redirect_url": "/azure/active-directory/user-help/multi-factor-authentication-end-user-app-passwords",

articles/active-directory/authentication/TOC.yml

@@ -43,8 +43,6 @@
     items:
     - name: How MFA works
       href: concept-mfa-howitworks.md
-    - name: Enable MFA
-      href: concept-mfa-get-started.md
     - name: License your users
       href: concept-mfa-licensing.md
     - name: Manage an Auth Provider

articles/active-directory/conditional-access/TOC.yml

@@ -17,8 +17,6 @@
   items:
   - name: Common Conditional Access policies
     href: concept-conditional-access-policy-common.md
-  - name: Security defaults
-    href: concept-conditional-access-security-defaults.md
   - name: Conditional Access policy components
     href: concept-conditional-access-policies.md
   - name: Conditions