I've come across this: https://www.eve-ng.net/
Spin up a beefy EVE-NG VM in VMWare (64GB RAM, many vCPUs) and then I can build an SD-WAN lab. I plan to start this tomorrow.
So it's like GNS in the cloud? Cool!
IT's a VM that runs on a hypervisor. Looks like our trial deployment ended some time back so I'll need to set this up from scratch here. :D