This chapter provides an overview on the main characteristics of cybersecurity training platforms. A model is first introduced that defines the common elements used in most training platform architectures. These elements are grouped into two classes. The core components, Training Content, Training Environment, Training Manager, and Data Storage are essential for all training platforms. In addition, some training platforms may include support components, namely Portal, Education Functions, and Monitoring. Training content is discussed next from the point of view of the content types encountered in most training platforms, and how various education aspects can be addressed via training content. Lastly, we examine training environments and the main ways in which they can be implemented, including the advantages and disadvantages of each approach.