AzurePublicDatasetV2 - Workload categories and VM roles

Hello everyone,
I am using the dataset for research purposes, and I have some questions related to the workload. In `vmtable.csv` some VMs are labeled as _"interactive"_, other as _"delay-insensitive"_, and most of them as _"unknown."_ I would like to know how this classification has been performed, and what do they mean. E.g., is it safe to think that in the "interactive" workload include web-services?
Related to that, what does a **deployment** represent? Is this an application? Does it follow the definition of deployments for container strategies?

Thank you very much in advance.