Update anonymous auth

Author: jess-hu-340

articles/data-factory/connector-azure-blob-storage.md

@@ -80,6 +80,7 @@ The following sections provide details about properties that are used to define
 
 This Blob storage connector supports the following authentication types. See the corresponding sections for details.
 
+- [Anonymous authentication](#anonymous-authentication)
 - [Account key authentication](#account-key-authentication)
 - [Shared access signature authentication](#shared-access-signature-authentication)
 - [Service principal authentication](#service-principal-authentication)
@@ -93,6 +94,44 @@ This Blob storage connector supports the following authentication types. See the
 >[!NOTE]
 >Azure HDInsight and Azure Machine Learning activities only support authentication that uses Azure Blob Storage account keys.
 
+### Anonymous authentication
+
+The following properties are supported for storage account key authentication in Azure Data Factory or Synapse pipelines:
+
+| Property | Description | Required |
+|:--- |:--- |:--- |
+| type | The `type` property must be set to `AzureBlobStorage` (suggested) or `AzureStorage` (see the following notes). | Yes |
+| containerUri | Specify the Azure Blob container URI which has enabled Anonymous read access by taking this format https://<AccountName>.blob.core.windows.net/<ContainerName> and [Configure anonymous public read access for containers and blobs](/azure/storage/blobs/anonymous-read-access-configure#set-the-public-access-level-for-a-container) | Yes |
+| connectVia | The [integration runtime](concepts-integration-runtime.md) to be used to connect to the data store. You can use the Azure integration runtime or the self-hosted integration runtime (if your data store is in a private network). If this property isn't specified, the service uses the default Azure integration runtime. | No |
+
+**Example:**
+
+```json
+
+{
+    "name": "AzureBlobStorageAnonymous",
+    "properties": {
+        "annotations": [],
+        "type": "AzureBlobStorage",
+        "typeProperties": {
+            "containerUri": "https:// <accountname>.blob.core.windows.net/ <containername>",
+            "authenticationType": "Anonymous"
+        },
+        "connectVia": {
+            "referenceName": "<name of Integration Runtime>",
+            "type": "IntegrationRuntimeReference"
+        }
+    }
+}
+```
+
+**Examples UI**:
+
+The UI experience will be like below. This sample will use the Azure open dataset as the source. If you want to get the open [dataset bing_covid-19_data.csv](https://pandemicdatalake.blob.core.windows.net/public/curated/covid-19/bing_covid-19_data/latest/bing_covid-19_data.csv), you just need to choose **Authentication type** as **Anonymous** and fill in Container URI with `https://pandemicdatalake.blob.core.windows.net/public`.
+
+:::image type="content" source="media/connector-azure-blob-storage/anonymous-ui.png" alt-text="Screenshot of configuration for Anonymous examples UI.":::
+
+
 ### Account key authentication
 
 The following properties are supported for storage account key authentication in Azure Data Factory or Synapse pipelines: