We're moving an on-prem Windows app to the cloud, and that's the approach I've taken so far when staking out our approach. We use Azure blob storage, but just

We're moving an on-prem Windows app to the cloud, and that's the approach I've taken so far when staking out our approach. We use Azure blob storage, but just the parts that reasonably maps to say S3. We're using Azure Service Bus, but keep to the AMPQ bits. We use Entra ID, but rely on OAuth and SCIM. And so on. So far we've not needed special functionality for anything critical, so while it wouldn't be just a flick of a button, the hope is we're avoiding painting ourselves in a cloud provider corner. Time will tell, hadn't done any cloudy stuff until a year or so ago.