[rewmie]

I'd love to hear about the rationale behind this decision, because operational cost certainly isn't it. It's ludicrous to migrate a high-traffic, high-risk API to a function-as-a-service solution like AWS Lambda. Either they have a very unique requirement or it sounds like this might very well be the poster child of clueless resume-driven development.

[JohnMakin]

IME the rationale behind such decisions is what I call the "sinking ship" phenomenon in infrastructure. Maybe their system was failing in weird ways, hard to maintain, causing all sorts of issues, etc. In that "sinking ship" it's always gonna be "women and children first," or rather, their most critical systems first.

[cebert]

What specifically makes it ludicrous to you?