Who is ultimately responsible for continual improvement within an organization according to ITIL 4?
Continual improvement is everyone's responsibility under ITIL 4, not a single team's. Each person contributes by identifying and acting on improvement opportunities within their own work, satisfying the stem's requirement that accountability is organisation-wide rather than delegated to a dedicated function.
Why this answer
ITIL 4 is explicit that continual improvement is a responsibility shared by everyone in the organization, not delegated to a single role or function. Every person — from frontline staff to senior leadership — contributes to identifying and implementing improvements within their scope of work. This reflects the guiding principle 'collaborate and promote visibility' and the broader ITIL 4 philosophy that improvement is embedded in daily work, not a separate activity.
Exam trap
DPI often tests the misconception that continual improvement is the job of a dedicated role or external party, when ITIL 4 explicitly makes it everyone's responsibility.
How to eliminate wrong answers
Option A is wrong because external auditors and consultants provide independent assurance and advice, but they do not own or execute continual improvement — accountability remains internal. Option C is wrong because while a Continual Improvement Manager may coordinate and facilitate the practice, ITIL 4 does not place sole responsibility on that role; improvement is distributed across all roles. Option D is wrong because the CISO owns information security, not continual improvement; conflating security accountability with improvement accountability is a category error.