A Sandbox is an isolated environment where you can safely experiment and test changes that you intend to apply to your live environment. The idea is to learn about the implications of these intended changes in advance, in order to decide on how to best conduct them, without actually causing any harm to the live environment in the process.
The way in which most companies solve the sandbox requirement is by copying the live environment onto a completely separate environment. Testing and experimenting then takes place on the copied environment, with no impact on the live one. …