Exam SY0-601 topic 1 question 694 discussion

A security architect at a large, multinational organization is concerned about the complexities and overhead of managing multiple encryption keys securely in a multicloud provider environment. The security architect is looking for a solution with reduced latency to allow the incorporation of the organization’s existing keys and to maintain consistent, centralized control and management regardless of the data location. Which of the following would best meet the architect's objectives?