Which of the following should a CIO review to obtain a holistic view of IT...

To obtain a holistic view of IT performance and identify potential gaps in service delivery, a CIO should review Key Performance Indicators (KPIs). KPIs are quantifiable measures that reflect the critical success factors of an organization and provide a comprehensive overview of performance across various aspects of IT service delivery, including efficiency, effectiveness, quality, and compliance with agreed service levels. While ROI analysis, SLA reporting, and staff performance evaluations offer valuable insights into specific areas, KPIs provide a broader perspective that encompasses various dimensions of IT performance, making them essential for a comprehensive assessment.