The ITIL 4 Service Value System (SVS) is composed of five core components: Guiding Principles, Governance, Service Value Chain, Practices, and Continual Improvement. Option A (Service Value Chain) is correct because it is the central operating model of the SVS, describing the six activities (Plan, Improve, Engage, Design and Transition, Obtain/Build, Deliver and Support) that convert inputs like demand and opportunity into value. Option C (Guiding Principles) is correct because the seven guiding principles (Focus on Value, Start Where You Are, Progress Iteratively with Feedback, Collaborate and Promote Visibility, Think and Work Holistically, Keep It Simple and Practical, Optimize and Automate) are a foundational SVS component that informs decision-making across the organization.
Option E (Practices) is correct because ITIL 4 defines 34 management practices (e.g., Incident Management, Continual Improvement, Change Enablement) that are a formal component of the SVS, providing the resources and capabilities needed to perform work. Option B (Service Portfolio) is not a component of the ITIL 4 SVS; it is a service management concept/tool used to manage services across their lifecycle, not one of the five SVS elements. Option D (ITIL Maturity Model) is also not an SVS component; it is a separate assessment tool used to evaluate an organization's ITIL adoption and capability maturity.