Merge pull request #43 from Azure/users/meshieh/toc

ToC item 2 and 3

Technical Guides/TechnicalGuide-ToC.md

@@ -4,9 +4,9 @@ The following documents describe the technical details of the various operationa
 
 1. [Understanding Ephemeral Storage Accounts](./1-Understanding%20ephemeral%20blobs.md) - Explains ephemeral blobs as the intermediary stage between data upload and ingestion.
 
-2. [Understanding data ingestion](./2-Understanding%20data%20ingestion.md)
+2. [Understanding data ingestion](./2-Understanding%20data%20ingestion.md) - Explains the checks for valid data slices, and steps taken to load each data slice into physical data warehouses from blob storage.
 
-3. [Understanding data factory pipelines](./3-Understanding%20data%20factory%20pipelines.md)
+3. [Understanding data factory pipelines](./3-Understanding%20data%20factory%20pipelines.md) - Explains how the pipeline created by Azure Data Factory moves data from the Ephemeral Blob to the Data Warehouse.
 
 4. [Understanding Logical Data Warehouses](./4-Understanding%20logical%20datawarehouses.md) - Explains the purpose and requirements of logical groupings of data warehouses.