[mywittyname]

Agreed. The only time I reach for lambda/cloud functions is for proof-of-concepts or throwaway code (low traffic is a valid use-case though). I'm not sure about Azure Functions, but GCP Cloud Functions can have atrocious cold-start times, depending on language.

This is absolutely a huge step backwards in terms of architecture. And methinks this architect doesn't have the broadest understanding of Azure and is reaching for the easiest tool in the toolbox.

Edit: "serverless" is a broad term. There's a difference between shoehorning every microservice into a lambda-like service (bad), and migrating from a collection of VMs to a managed Azure service that does the exact same thing (can be good).