ITIL (Information Technology Infrastructure Library) is a set of best practices for IT service management focused on aligning IT services with business needs. It effectively supports strategic planning, integration of IT and business goals, and cost reduction in IT operations.
However, ITIL does not involve hardware designing, which is a technical and engineering activity outside the scope of IT service management frameworks.
Other options (A), (B), and (C) represent areas where ITIL provides guidance and processes to improve IT service delivery and management.