What is a crypto fiat currency?

Could you elaborate on the concept of a "crypto fiat currency"? As a practitioner in the field of cryptocurrency and finance, I'm interested in understanding how this hybrid form of currency integrates the principles of cryptocurrency with the traditional aspects of fiat money. Specifically, I'm curious about its underlying technology, how it is issued and regulated, and how it differs from both traditional fiat currencies and purely decentralized cryptocurrencies. Additionally, I'd like to know about any potential advantages or disadvantages of adopting such a currency system and how it might impact the future of finance and digital transactions.