What are notable differences between DataWeave 2.0 and DataWeave 1.0?

• A. DataWeave 2.0 uses the Mule 4 runtime with %dw 2.0 syntax, improved typing, streaming, and better integration; 1.0 was used with Mule 3.x.
• B. DataWeave 2.0 is completely unrelated to Mule 4.
• C. DataWeave 1.0 supports streaming; DataWeave 2.0 does not.
• D. DataWeave 2.0 can only transform JSON to XML.

Answer: (A)

DataWeave evolution tracks the shift to Mule 4, bringing a newer language version, runtime, and capabilities. DataWeave 2.0 runs on the Mule 4 runtime and uses the DataWeave 2.0 syntax (the %dw 2.0 header). It introduces stronger typing, a more robust type system, streaming support for large payloads, and closer integration with Mule 4 components and workflows. DataWeave 1.0 belongs to the Mule 3.x era and uses the older %dw 1.0 syntax, with a simpler typing model and no emphasis on streaming in the way 2.0 provides. Also, DataWeave is not limited to a single transformation direction; it can convert among JSON, XML, CSV, and other formats, so claiming it can only transform JSON to XML isn’t accurate. The notion that DataWeave 2.0 is unrelated to Mule 4 is incorrect, and saying that 1.0 supports streaming while 2.0 does not misrepresents the actual enhancements—2.0 adds streaming and other improvements.