Veeam Explorer for Microsoft Exchange allows recovery of items that are under litigation hold or in- place hold. This feature is essential for compliance and legal discovery processes where emails and other items need to be preserved and may be subject to eDiscovery requests. It is not used for restoring databases from backups created with Veeam RMAN plug-in, exporting to BAK files, or restoring original passwords for account objects.

You can not create a copy job for a transaction job since its a child job of the main backup job.

Explanation
"Failover Now: Failover now refers to an immediate response to an unexpected system or service failure. In this case, the primary system or service experiencesan unplanned outage or becomes unavailable, and the failover process is triggered immediately to shift the workload to a secondary system or service."

Virtual Labs is the ideal feature for testing the impact of operating system updates in an isolated environment.
Virtual Labs allow you to create a secure, isolated copy of your production environment where you can test updates, patches, and other changes without affecting the live environment.References:Veeam Backup & Replication Documentation, Veeam Virtual Lab Guide

Explanation
Veeam ONE is a comprehensive monitoring, reporting, and capacity planning solution that provides insights into your virtual infrastructure. The Veeam ONE Web Client allows you to generate various reports, including capacity planning reports, to help you understand your infrastructure's resource utilization and make informed decisions.