Added to TOC, updates to hub...

Author: IEvangelist

articles/cognitive-services/TOC.yml

@@ -7,14 +7,28 @@
     href: Welcome.md
   - name: Cognitive Services and Machine learning
     href: cognitive-services-and-machine-learning.md
-  - name: Virtual networks for Cognitive Services
-    href: cognitive-services-virtual-networks.md
   - name: Custom subdomains for Cognitive Services
     href: cognitive-services-custom-subdomains.md
   - name: Language support
     href: language-support.md
-  - name: Configure customer-managed keys with the Azure portal
-    href: ./Encryption/cognitive-services-encryption-keys-portal.md
+- name: Quickstarts
+  items:
+  - name: Create a new resource using the Azure portal
+    href: cognitive-services-apis-create-account.md
+  - name: Create a new resource using the Azure CLI
+    href: cognitive-services-apis-create-account-cli.md
+  - name: Diagnostic logging
+    href: diagnostic-logging.md
+- name: Security
+  items:
+  - name: Cognitive Services security
+    href: cognitive-services-security.md
+  - name: Virtual networks for Cognitive Services
+    href: cognitive-services-virtual-networks.md
+  - name: Configure customer-managed keys
+    href: ./encryption/cognitive-services-encryption-keys-portal.md
+  - name: Authenticate requests to Cognitive Services
+    href: authentication.md
 - name: Container support
   items:
   - name: Container support
@@ -41,16 +55,6 @@
       href: ../container-registry/container-registry-get-started-azure-cli.md
     - name: Azure Kubernetes Service (AKS)
       href: ../aks/tutorial-kubernetes-prepare-app.md
-- name: Quickstarts
-  items:
-  - name: Create a new resource using the Azure portal
-    href: cognitive-services-apis-create-account.md
-  - name: Create a new resource using the Azure CLI
-    href: cognitive-services-apis-create-account-cli.md
-  - name: Authentication
-    href: authentication.md
-  - name: Diagnostic logging
-    href: diagnostic-logging.md
 - name: Resources
   items:
   - name: Azure Roadmap
@@ -63,15 +67,15 @@
     href: https://azure.microsoft.com/support/legal/cognitive-services-compliance-and-privacy/
   - name: Support & help options
     href: cognitive-services-support-options.md
-  - name: Service Level Agreement(SLA)
+  - name: Service Level Agreement (SLA)
     href: https://azure.microsoft.com/support/legal/sla/cognitive-services/v1_1/
   - name: Videos
     href: https://azure.microsoft.com/resources/videos/index/?services=cognitive-services
   - name: Blog
     href: https://azure.microsoft.com/blog/topics/cognitive-services/
   - name: Service updates
     href: https://azure.microsoft.com/updates/?product=cognitive-services
-  - name: Provide Product Feedback
+  - name: Provide product feedback
     href: https://cognitive.uservoice.com/
   - name: Code of conduct
     href: https://go.microsoft.com/fwlink/?LinkId=698895

articles/cognitive-services/cognitive-services-security.md

@@ -29,14 +29,14 @@ For .NET users, consider the <a href="https://docs.microsoft.com/dotnet/framewor
 
 When discussing authentication, there are several common misconceptions. Authentication and authorization are often confused for one another. Identity is also a major component in security. An identity is a collection of information about a <a href="https://en.wikipedia.org/wiki/Principal_(computer_security)" target="_blank">principal <span class="docon docon-navigate-external x-hidden-focus"></span></a>. Identity providers (IdP) provide identities to authentication services. Authentication is the act of verifying a user's identity. Authorization is the specification of access rights and privileges to resources for a given identity.
 
-< TODO: Add more details about authentication with Cog Svcs >
+For more information on authentication with subscription keys, access tokens and Azure Active Directory (AAD), see <a href="https://docs.microsoft.com/azure/cognitive-services/authentication" target="_blank">authenticate requests to Azure Cognitive Services<span class="docon docon-navigate-external x-hidden-focus"></span></a>.
 
 ## Environment variables and application configuration
 
 Environment variables are name-value pairs, stored within a specific environment. An alternative to using hardcoded values for sensitive data, is to use environment variables. Hardcoded values are insecure and should be avoided.
 
-> [!WARNING]
-> Do **not** use hardcoded values for sensitive data, doing so is a major security vulnerability!
+> [!CAUTION]
+> Do **not** use hardcoded values for sensitive data, doing so is a major security vulnerability.
 
 ### Set environment variable
 

articles/cognitive-services/index.yml

@@ -12,7 +12,7 @@ metadata:
   author: nitinme
   ms.author: nitinme
   manager: nitinme
-  ms.date: 01/21/2020
+  ms.date: 03/17/2020
 
 highlightedContent:
 # itemType: architecture | concept | deploy | download | get-started | how-to-guide | learn | overview | quickstart | reference | tutorial | whats-new
@@ -139,6 +139,29 @@ conceptualContent:
           itemType: reference
           text: Cognitive Services containers FAQ
 
+tools:
+  title: Software development kits (SDKs)
+  summary: Get started with the Cognitive Services SDK in your favorite programming language.
+  items:
+  - title: C#
+    imageSrc: https://docs.microsoft.com/media/logos/logo_Csharp.svg
+    url: https://docs.microsoft.com/dotnet/api/overview/azure/cognitiveservices/client?view=azure-dotnet
+  - title: Go
+    imageSrc: https://docs.microsoft.com/media/logos/logo_Go-lightblue.svg
+    url: https://godoc.org/github.com/Azure/azure-sdk-for-go/services/cognitiveservices
+  - title: Java
+    imageSrc: https://docs.microsoft.com/media/logos/logo_java.svg
+    url: https://docs.microsoft.com/java/api/overview/azure/cognitiveservices/client?view=azure-java-stable
+  - title: JavaScript
+    imageSrc: https://docs.microsoft.com/media/logos/logo_js.svg
+    url: https://docs.microsoft.com/javascript/api/overview/azure/cognitive-services?view=azure-node-latest
+  - title: Python
+    imageSrc: https://docs.microsoft.com/media/logos/logo_python.svg
+    url: https://docs.microsoft.com/python/api/overview/azure/cognitive-services?view=azure-python
+  - title: R
+    imageSrc: https://docs.microsoft.com/media/logos/logo_R.svg
+    url: https://github.com/Azure/AzureCognitive
+
 additionalContent:
   sections:
     - items:
@@ -152,15 +175,3 @@ additionalContent:
         links:
           - text: Cognitive Services Management
             url: https://docs.microsoft.com/rest/api/cognitiveservices/
-      - title: SDKs
-        links:
-          - text: .NET
-            url: https://docs.microsoft.com/dotnet/api/overview/azure/cognitiveservices/client?view=azure-dotnet
-          - text: Go
-            url: https://godoc.org/github.com/Azure/azure-sdk-for-go/services/cognitiveservices
-          - text: Java
-            url: https://docs.microsoft.com/java/api/overview/azure/cognitiveservices/client?view=azure-java-stable
-          - text: Node.js
-            url: https://docs.microsoft.com/javascript/api/overview/azure/cognitive-services?view=azure-node-latest
-          - text: Python
-            url: https://docs.microsoft.com/python/api/overview/azure/cognitive-services?view=azure-python