Even at $legacy-big-company where I worked at the time, moving whatever made sense away from autoscaling instances and onto Lambda resulted in such significant

Even at $legacy-big-company where I worked at the time, moving whatever made sense away from autoscaling instances and onto Lambda resulted in such significant cost savings that no-one is likely to ever look back. For simple things like the ‘pull a list of recent clients from the DB’ API, there’s nothing cheaper, and when you constrain your usage to only things that make obvious sense, it remains relatively easy to deploy and run.