IT Infrastructure Components, Virtualization, and Cloud Models

Infrastructure components, virtualization, and cloud models in ISC.

This chapter covers the infrastructure components that support modern information systems. The key is to understand enough about the environment to judge control implications, operational risk, and reliability of system output.

In This Chapter

How to Use This Chapter

  • Read this chapter before deeper systems and control topics if infrastructure concepts are still fuzzy.
  • Focus on how architecture choices affect access, availability, and control ownership.
  • Revisit it whenever an ISC question depends on understanding the environment supporting the application.

In this section

Revised on Friday, April 24, 2026