You can of course use a cloud-based streaming solution, such as SAM Vibe or install another SAM license on a dedicated Windows server in some datacenter.
But you could just as well run another (independent) SAM Broadcaster instance on the very same machine. (More details on the technical side over here: viewtopic.php?f=20&t=45448
The SAM Vibe and other cloud or datacenter/dedicated server solutions all come with additional monthly costs that should not be forgotten.
It might be cheaper to pay once for a new license (and another small computer if you feel you need one) instead of paying (lower) regular fees.