I'm assuming specifically you mean Nex functions? Otherwise NATS gives you connectivity and a message queue - it doesn't (or didn't) have the concept of task executions or workflows.
With regards to Nex -- it isn't fully stable and only supports Javascript/Webassembly. It's also extremely new, so I'd be curious to see how things stabilize in the coming year.
With regards to Nex -- it isn't fully stable and only supports Javascript/Webassembly. It's also extremely new, so I'd be curious to see how things stabilize in the coming year.