From the Document: "Technological advances have made it feasible to create a real time payments (RTP) network between financial institutions in which the recipient of an electronic payment would receive funds in seconds, compared to the current practice of later in the day or the next day. RTPs could potentially be introduced by the Federal Reserve (Fed), private-sector competitors, or both. What role, if any, the Fed should play in RTP development is a matter of debate. [...] This Insight discusses payment and settlement systems that allow individuals and businesses to complete payments across different financial institutions and platforms."
Congressional Research Service: https://crsreports.congress.gov/