Hi,
On-the-Fly masking reads from a source(db or file) and writes to a target (db or file respectively).
any masking method is persistent in Delphix.
On-the-fly is "pull" mode, you can define a environment/connector as source and current environment/connector is treated as target, i.e. you read from a source and write masked data in to target
For multiple connections use multi-tenant mode.