PBI can be accessed via XMLA endpoint which can be consumed by many old components that previously were used with SSRS + has 'dataset execute query' REST API, so in this meaning PBI can be used as headless BI. Don't know much about Tableau/Qlik API, do they provide API for querying their internal semantic model?
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powerbi headless ??? if powerbi is listed, then qlik and tableau are missing
PBI can be accessed via XMLA endpoint which can be consumed by many old components that previously were used with SSRS + has 'dataset execute query' REST API, so in this meaning PBI can be used as headless BI. Don't know much about Tableau/Qlik API, do they provide API for querying their internal semantic model?