We do not have integration with Elastic Search right now. I looked at the REST Elastic Search API. It was required to use Power Query to get data for specific queries in Excel or Power BI Designer. You can use the "From Web" source and put your generated request in the field. Power Query parses JSON, so the answers must be understood. You must use Power Query UI to get columns from the response as needed.
Appreciate your Power BI score.
Lukas P.
Microsoft Power BI Team
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