Stored procedures are a great way to abstract out complexity, promote code reuse and automate tasks in data virtualization environments like CData Virtuality. They can be used as bridges between BI tools and web services, transferring large amounts of data using batch processing, and reusing business logic to mask column data with language-specific strings. Stored procedures can also simplify onboarding new clients by automating the creation of new schemas, views, stored procedures, and permissions. By leveraging stored procedures in CData Virtuality, developers can unlock the full potential of their data and streamline their workflows.