Routing Number also called as RTN or Routing Transit Number is used to facilitate fund transfer across the banks in USA.
FedACH is Federal Reverse Bank's Automated clearing house.
Fedwire is the real-time gross settlement electronic payments service owned and operated by the Federal Reserve Banks.
The Fedwire Funds Transfer Service: Fedwire is the electronic payments service with realtime gross settlement operated by the Federal Reserve Bank. The Fedwire Securities Service is a real-time gross settlement book-entry securities service owned by the Federal Reserve Bank that allows for the immediate, simultaneous delivery of securities against payment. Fedwire participants banks are primarily depository institutions acting on behalf of themselves and their customers.