What is data interoperability and why does it matter?

What are some of the risks and challenges associated with data interoperability?

What kinds of data can be transferred through DataMover?

Who is responsible for protecting data before, during, and after the transfer takes place?

When data is transferred, do contributors to DataMover or partners of DataMover all get a copy?

Are there common standards by which contributors to DataMover should abide in performing transfers?