In this particular case, it was resume-oriented architecture (ROAr!) The original team really wanted to use all the hottest new tech. The management was actually rather unhappy, so the job was to pare that down to something more reliable.

Eh, businesses want to stay resilient to a single vendor going down. My least favorite question in interviews this past year was around multi-cloud. Because imho it just isn't worth it- the increased complexity, the trying to like-like services across different clouds that aren't always really the same, and then just the ongoing costs of chaos monkeying and testing that this all actually works, especially in the face of a partial outage like this vs something "easy" like a complete loss of network connectivity... but that is almost certainly not what CEOs want to hear (mostly who I am dealing with here going for VPE or CTO level jobs).

I could care less about having more vendor dinners when I know I am promising a falsehood that is extremely expensive and likely going to cost me my job or my credibility at some point.

sticker shock / looking at alternative vendors