Individuals too:

> FedNow is an instant payment service developed by the Federal Reserve for depository institutions in the United States, which allows individuals and businesses to send and receive money.[1][2][3][4]

* https://en.wikipedia.org/wiki/FedNow

> The FedNow Service went live on July 20, 2023. It is available to depository institutions in the United States and enables individuals and businesses to send instant payments through their depository institution accounts. […] At the most fundamental level, the service provides interbank clearing and settlement that enables funds to be transferred from the account of a sender to the account of a receiver in near real-time and at any time […]

* https://www.federalreserve.gov/paymentsystems/fednow_about.h...

> The Federal Reserve said on Monday that it would create a real-time payments system, with the goal of making paychecks and money transfers available for use more quickly.

* https://www.nytimes.com/2019/08/05/business/economy/fed-real...

(Your back-end has to be fast before your front-end can be.)

FedNow enables banks to offer near instantaneous bank transfers to their customers -- if both the banks involved in the transaction have implemented the relevant FedNow protocols. Since FedNow is relatively new, most banks probably don't support it yet.

Well, it's a service for banks that will allow them to offer their customers realtime transfers between banks. Just like ACH. I don't use ACH directly, but I do use it through my bank all the time.