When soliciting feedback on a business case associated with a new system upgrade to satisfy new regulations, the current IT service vendor would be identified as an external stakeholder. External stakeholders are those outside the organization who can influence or be influenced by the outcomes of the project.

In the context of COBIT 2019, external stakeholders are those who are not part of the enterprise but have a vested interest in the success of IT initiatives. The current IT service vendor plays a critical role in providing feedback on the feasibility, implementation challenges, and potential impact of the new system upgrade.

COBIT 2019 Framework References:

COBIT 2019 Implementation Guide, Chapter 7:Highlights the importance of engaging external stakeholders, including vendors, to gain valuable insights and feedback.

COBIT 2019 Framework: Governance and Management Objectives:Emphasizes the need for stakeholder engagement, including both internal and external parties, to ensure comprehensive feedback and alignment with requirements.

Engaging the current IT service vendor as an external stakeholder ensures that all relevant perspectives are considered, enhancing the quality and feasibility of the business case.