Currently, you might import large amounts of data from another relational database system like Oracle or MongoDB into your SQL Server database. If so, you can use Polybase instead.
Polybase has certainly been improved in SQL Server 2019. For instance, more data sources are now available. Plus, you can even install Polybase on SQL Server 2019 on Linux as well.
Instead of importing the data from the source you can use Polybase to connect to it remotely. Which means that you can run your queries against the source directly instead.
Read on for more in this vein. Here it’s less about the technical capabilities and more about making life easier for other people in the business.