Bold BI dashboard designer supports connecting Azure Search web services through REST API.
To configure the Azure Search data source, follow the below steps:
NOTE: You can also create a data source from the home page by clicking the Data Sources menu from left menu panel and Create Data Source from the data sources page.

Once you click the data source, the NEW DATA SOURCE configuration panel opens. Follow the below steps to create Azure Search data source.
Enter a name and description (optional) for the data source.
Enter a valid Azure Search REST API endpoint in the URL textbox. Refer the Azure Search API documentation for more details.
Example: [https://<:service-name>.search.windows.net/indexes/<:index-name>/docs?api-version=2017-11-11]
Select GET method for the REST API in Method combo box.
In Max Rows, enter the maximum number of rows to be fetched from the Azure Search data source. This value is used to fetch the data from Azure Search data source via pagination.
Choose a time interval for Refresh Settings using the combo box, to trigger the Rest API request periodically to keep the data in sync with our dashboard.
Select JSON data type in Data Format combo box.
Replace <:your_api_key> with your api-key under Headers with a valid API key.
Choose None under Authentication Type, as authentication is done through header.
You can also edit the connection information set here using the Edit Connection option.
Azure Search authentication supports API Key authentication.
Sign in to the Azure portal, and in your search service Overview page.
You can get the API key for the specific service as mentioned in below image.
3. For more information, you can refer to the mentioned link Azure Search API Key information
Max Rows | Most of the REST APIs return only fewer data on a single API request. To pull the amount of data you need, set a value in this field. Pagination is handled internally and will fetch the amount of data you need. |
Refresh Settings | Period of time before next refresh call is triggered. This will automatically trigger a call for the API configured in the data source to keep the data up to date. If you do not want to sync your new data, choose ‘Never’. |