It doesn't actually scale to 0. The scale to 0 argument is actually just accounting trickery. Servers are still waiting around burning cycles doing nothing wait

It doesn't actually scale to 0. The scale to 0 argument is actually just accounting trickery. Servers are still waiting around burning cycles doing nothing waiting to run a serverless function. All that has changed is that Amazon has spread the cost of low utilization across all customers. Which gets baked into your cost as well.