A NICE Challenge Environment is made up of the virtual machines and challenges associated with those virtual machines within a specific category. The goal is to one day have a NICE Challenge Environment for every category and a challenge for every task of the NICE Cybersecurity Workforce Framework. Which would mean eventually there would be 7 challenge environments, and hundreds of challenges.
At the moment the Operate and Maintain Environment is complete. Protect and Defend as well as Investigate Environments are under development.
The number of challenges available is constantly increasing but for a current loose number, 40+.