Which feature is essential for ensuring that data visibility aligns with user roles in ServiceNow?

Access Control Lists (ACLs) are vital for managing who can see or interact with specific data in ServiceNow based on user roles. They allow organizations to define detailed permissions for various resources, ensuring that only authorized users can access certain fields, records, or tables.

When using ACLs, you can specify conditions and rules that determine accessibility, effectively aligning data visibility with the user's role within the organization. This means that sensitive information can be protected, while users can still access the data necessary for their job functions.

In contrast, while Data Policies help regulate data input and enforce data consistency, they do not specifically control user visibility to data. Workflows are primarily focused on automating processes and tasks rather than on data access control. The Service Catalog is largely concerned with service requests and fulfillment processes and does not directly relate to data visibility across user roles.

Thus, the use of ACLs is essential for ensuring that the right people have access to the right data, making it the most appropriate choice for this question.