Which of the following provides the MOST comprehensive understanding of an organization's information security posture?

A security maturity assessment evaluates not only current vulnerabilities but also governance structures, risk management practices, incident response, and ongoing improvement processes. It provides a holistic and strategic view of the security posture.

“Maturity assessments provide a comprehensive evaluation of an organization’s security controls and their alignment with business objectives.”

— CISM Review Manual 15th Edition, Chapter 1: Information Security Governance, Section: Maturity Models*

Other methods like penetration tests or vulnerability assessments offer snapshots of technical weaknesses, but they lack strategic depth.