You shouldn't be getting downvoted. Serverless is nothing more than a hype which is meant to overcharge you instead of running it on a server owned by you
That's a reductionist view of a technical aspect because of the way the technical aspect is sold. Serverless are VMs that launch and turn off extremely quickly, so much so that they open up new ways of using said compute.
You can deploy serverless technologies in a self hosted setup and not get "overcharged". Is a system thread bullshit marketing over a system process?