[NomDePlum]

I haven't I'm afraid.

I have been involved in several cloud migrations of existing systems. These where all successful and a lot was driven by not having to own and manage the underlying servers and/or the need to replace aged systems at the very last point possible.

Like most things understanding the rationale and desired outcome are key. One of the things you get from going to cloud is, as you point out, is a wider group of people who already know and understand key parts of the architecture/infrastructure choices.