To fulfill audit planner responsibilities, the information technology (IT) auditor must determine examinable units using a selection method for engagements. Through synthesis of relevant audit standards and guidelines as well as professional experience, Chapter 1 presents crucial inputs to the IT audit planning process to organize a comprehensive assessment of an IT audit area. Chapter 1 discusses how to obtain an understanding of assurance objectives, enterprise objectives, and business practices for an IT audit project. Moreover, Chapter 1 discusses IT audit materiality, IT audit risk assessment tasks, and presents foundational control appraisal tasks from a system perspective.