This web application is used to experiment with a variety of Item interactions + Testmap configurations too.
You can import QTI 2.1 Items and Content Packages into a content Library.
After you import Testmaps and Items, you can make changes and preview how those items will look in TN8.
Even though this is a cloud-based, shared application, every Tenant has their own secure "space" called a Library.
A Tenant's Library is where a Tenant's Items and Testmaps are imported and assembled.
You can even create a TN8 "Publish Ready" content package from a Testmap.