Intermediate to advance knowledge using HP Computers, Lenovo Computers, Dell Computers, Xerox Konica Minolta Ricoh, Microsoft Suite, Citrix, Active Directory, Workday, Edge, Chrome, Chrome OS, Apple iOS, Android Devices, iPhone, Zendesk, Service Now, and Imaging Computers for deployment. ESI is known as the Service Center and provides the facilities and leaders it serves with back-office support in areas such as accounting, construction, compliance, human resources, information technology, learning and development, legal, and risk management, and recruiting.