Managed care plans use authorization systems to manage costs, quality, and access to care. Authorization involves reviewing requests for services for medical necessity. It helps direct care to the appropriate setting and provides utilization data. Authorization can be prospective, concurrent, or retrospective. Electronic authorization systems provide efficiencies over paper-based ones by streamlining the process and reducing errors and costs. However, standardizing required data across plans remains a challenge. Web-based authorization portals like Highmark's Web ROAR allow providers to submit, track, and check on authorization requests online in a more convenient manner.