Azure Data Factory upgraded the Teradata connector with new feature adds and enhancement. More specifically:
The Teradata connector is now empowered by a built-in driver, which save you from installing the driver manually to get started.
You can now use copy activity to ingest data from Teradata with out-of-box parallel copy to boost performance. With hash partition and dynamic range partition support, data factory can run parallel queries against your Teradata source to load data by partitions concurrently to achieve better performance.
It also addressed the issues like connection and query timeout that some customers hit earlier.