As a security guy I HATE the loss of visibility in going to the cloud. Can you duplicate it? Sure. Still not as easily as spanning a trunk and you still have to trust what you’re seeing to an extent.
The visibility I was mentioning in the parent comment was visibility from executives in your business, but I can see how it would be confusing.
There are tradeoffs — cloud removes much of the physical security risks and gives you tools to help automated incident detection. Things like serverless functions let you build out security scaffolding pretty easily.
But in exchange you do have to give some trust. And I totally understand resistance there.