Add three contexts matching maintainContext in main toc.yml

Author: Marc Gelormino

articles/machine-learning/service/breadcrumb/toc.yml

@@ -4,12 +4,46 @@
   items:
   - name: Machine Learning
     tocHref: /azure/open-datasets/
-    topicHref: /azure/machine-learning/
+    topicHref: /azure/machine-learning/index
     items:
     - name: Service
       tocHref: /azure/open-datasets/
-      topicHref: /azure/machine-learning/service/
+      topicHref: /azure/machine-learning/service/index
       items: 
       - name: Open Datasets
-        tocHref: /azure/open-datasets/sample
-        topicHref: /azure/machine-learning/service/
+        tocHref: /azure/open-datasets/
+        topicHref: /azure/open-datasets/index
+  
+- name: Azure
+  tocHref: /azure/
+  topicHref: /azure/index
+  items:
+  - name: Machine Learning
+    tocHref: /azure/iot-edge/
+    topicHref: /azure/machine-learning/index
+    items:
+    - name: Service
+      tocHref: /azure/iot-edge/
+      topicHref: /azure/machine-learning/service/index
+      items:
+      - name: IoT Edge
+        tocHref: /azure/iot-edge/
+        topicHref: /azure/iot-edge/index
+
+
+- name: Azure
+  tocHref: /azure/
+  topicHref: /azure/index
+  items:
+  - name: Machine Learning
+    tocHref: /azure/architecture/
+    topicHref: /azure/machine-learning/index
+    items:
+    - name: Service
+      tocHref: /azure/architecture/data-guide/technology-choices/
+      topicHref: /azure/machine-learning/service/index
+      items:
+      - name: ML Products
+        tocHref: /azure/architecture/data-guide/technology-choices/
+        topicHref: /azure/architecture/data-guide/technology-choices/data-science-and-machine-learning
+