The name "serverless" doesn't mean that there are no servers. It means that, as a developer, you don't need to manage the server. It's abstracted out for you.
I know what it means, I pitched serverless as a new tool to a former employer back nearly a decade ago, I had to thoroughly research it because the manager would of said no if I had no idea how it worked, funnily enough, he said yes before I could finish my entire pitch.