[theshrike79]

Lambdas are amazing at clearing queues.

You can have a single queue gathering workloads and then have Lambda functions grab a bunch of tasks, handle them, grab more etc. until the max runtime is met and they're automatically rebooted.

It's also pretty trivial to add more processing capacity when the queue goes over a specified limit just by allowing for more concurrent Lambdas.

And when there's nothing to process, you've got one idling Lambda doing nothing and costing nothing.