This document discusses application virtualization in test environments at KPN Systemation. It introduces LISA Virtualize, which is used within KPN to virtualize various applications including order intake orchestration, commercial order orchestration, CRM, BRM, ECM, application integration, trouble ticketing, BI, assets, product presentment, account, EAI, call center, collections, Mijn KPN, and engineer applications. An example basic virtual service is provided with 4 steps.