Describe the various interfaces utilized by the information system to perform its information processing, including:

• Interface overview:
  • Describe the interface functionality
  • Define key hardware and software components related to the interface
• Functional description:
  • Describe the operations performed by the interface
  • Describe how the end users interact with the interface
  • Describe the events that trigger the movement of information through the interface
• Data transfer:
  • Describe how data is moved along the component systems of the interface
  • Describe how connectivity among the systems will be implemented
  • Describe the type of packaging or messaging of data that will be used to transfer data
• Transactions:
  • Describe the types of transactions that will be used to move data along the component systems of the interface being defined

The preceding process should be followed for each interface being documented for the information system in question. This activity is very important in that it allows you as the information security architect to have a full understanding of how data moves between systems and with the various types of users of the information system.