I explain the meaning of an interoperable payment system and why interoperability is crucial for efficiency. I review some alternative approaches to interoperability, including central bank digital currencies (CBDCs), hybrid CBDCs, and two-ledger upgrades of bank-based payment systems

The incorporation of new technologies to financial activities implies challenges and opportunities to financial authorities. They are reacting to the unavoidable trend towards digitalization of financial activities with the objective of preserving stable and efficient payment and financial...

As a result of technological advancements, instant delivery of digital services has become the norm in today's society. Yet, until recently, this trend did not extend to retail payment services, which normally took one or up to a few working days from the end user's perspective. Following...