Instant Payments (or Realtime as they are sometimes called) are set to be the new normal for bank payments. Payments Consultancy have been tracking the migration to instant for a couple of years and are able to advise clients on what is happening globally, the key suppliers to talk to and the use cases that are proving most popular.
Realtime payments and Card Payments are now on a convergence path. It is just the timescale and amount of cannibalisation that are to be determined.
In the UK you will need to connect to the Faster Payments network to process instant payments. Mark McMurtrie was the founding editor of InstaPay a knowledge centre for global instant payments intelligence.