importance of payment systems

1
Payment gateway
Some interesting info about payment gateway

• This chapter sets up the basic knowledge
  of payment systems to help the reader understand
  the discussions in the later chapters.
• The background knowledge includes the several
  aspects of settlement, actors in payment systems,
  banks as a payment system, process
  of payment systems, and functions of central
  banks.
• The economic natures of payment systems, such as
  the network externalities, natural monopoly and
  interdependencies of payment systems are also
  discussed in this chapter.