Which of the following best describes the function of a OneStream application?

The function of a OneStream application is best described by its ability to combine data integration and consolidation. OneStream is primarily designed for financial reporting, budgeting, forecasting, and consolidation of data from different sources. In practice, this means that the application simplifies data management by allowing organizations to pull together information from various systems and sources into a single, comprehensive financial reporting framework. This process ensures accuracy, efficiency, and consistency in financial data, which is crucial for effective decision-making and compliance.

While managing enterprise resource planning is an important function in many organizations, it is not the specific focus of OneStream. The application does not directly address the creation of marketing strategies or conducting employee performance reviews, as these areas typically fall outside the financial management capabilities that OneStream provides. Therefore, the correct answer highlights the application's primary role in streamlining data processes, which is integral to financial operations within a business.