The IRS is retiring the Filing Information Returns Electronically system, commonly known as FIRE, and replacing it with the Information Returns Intake System, or IRIS. Why IRIS A2A Is Offered as a Filing ServiceIRIS A2A allows an approved transmitter to communicate directly with the IRS. An IRIS filing service solves this problem by remaining the authorized transmitter. This is why IRIS A2A is often more practical as a managed filing service than as standalone downloadable software. The filing service prepares the return data, generates the required forms, transmits the information through IRIS, and retrieves the IRS acknowledgment.