Just to clarify, are you referring to/practicing Azure Learn modules or some other trainings? https://learn.microsoft.com/training/modules/describe-core-architectural-components-of-azure/
Microsoft Learn training is free and available to anyone.
Most of the Microsoft Learn training content involves exercise units where students create real things in Azure, such as virtual machines or Azure functions, to practice what they're learning. You use the sandbox to complete these lessons without a paid Azure subscription.
Microsoft Learn Sandbox | Frequently asked questions
The sandbox works independently from your regular subscriptions. While you're practicing and learning with Microsoft Learn, you can use the sandbox.
Also, the sandbox environment created for a module is available for four consecutive hours to ensure that you can finish the module. The Microsoft Learn exercises are meant to be finished in one sitting, in an hour or less.
