Which method of viewing Extensibility requires the use of multiple cubes?

Vertical Extensibility is the method that requires the use of multiple cubes for viewing. This approach involves extending the functionality of a OneStream application by adding complete sets of reports or dimensions to existing cubes, creating separate but related cubes that are designed to handle different aspects of financial data or business processes.

By employing this method, organizations can manage diverse datasets within distinct structural frameworks while still maintaining the capability for integration. Each cube can represent different business units, geographical regions, or specific reporting scenarios, which allows for comprehensive data analysis tailored to various needs. This is particularly beneficial when dealing with complex organizational structures or distinct operational requirements that necessitate separate yet interconnected data models.

The other methods of extensibility do not inherently require multiple cubes. Horizontal Extensibility focuses on adding elements to existing cubes without needing to create new ones, Layered Extensibility enhances functionality within a single cube through the use of layers, and Dynamic Extensibility allows for real-time modifications and changes without the necessity of setting up multiple specialized cubes.