This chapter examines in the form of a detailed case study the cybersecurity training framework named CyTrONE. The motivation and target for conducting such a case study on CyTrONE are explained in the beginning. An overview of the framework is presented next, mentioning first details about its architecture, followed by a discussion of the manner in which architecture can be mapped on the training platform model introduced in Chap.  9 . The training content and training environment representation are thoroughly analyzed next in order to illustrate how these aspects can be addressed in practice. For this purpose, we start by describing the corresponding representation syntax and then examine several illustrative examples for each case. Finally, the most important lessons learned from designing and implementing CyTrONE are reviewed, with the goal of providing a practical reference for future training platform developers.