What is data source in SSRS?

Data Source: In order to power any report developer must need to find a way to gather the data. As of today, we can store/gather in multiple data storage technologies like RDBMS, Cloud, Big-Data etc. Every time when we create a report in SSRS, we can connect to these data storage thus creating a data source in SSRS. We can then either create our own query to fetch the data from these storages or we can use existing created objects like procedure/views from underlying data sources to fetch the data.

As of today, we can connect to multiple data sources like Azure, SSAS, Oracle, SAP, Teradata etc.