The code is executed remotely on Microsoft's servers (I can see many organizations just turning this feature off for all staff). I'm open to correction, can't s

The code is executed remotely on Microsoft's servers (I can see many organizations just turning this feature off for all staff). I'm open to correction, can't see it in any of the demos, but the code it seems is also entered within a cell, it's not clear whether the output can manipulate/overwrite pre-existing cells as a result or it needs to have its own separate output.