OneSource Virtual’s Application Management Services Helps you Harness the Power of Workday. Workday is a powerful application for managing your organization’s human resources and finance systems. To get the most out of its robust functionality, it must be configured by a team that possesses a comprehensive understanding of Workday and shares a full appreciation of your business needs. OneSource Virtual’s Application Management Services for Workday helps your company get the most out of Workday, from basic tasks to intricate configurations. We take care of the day-to-day, so you can build toward tomorrow.