Thanks for clarification. On one hand I’m happy about you sharing this experience. On the other hand, I still feel we can’t assess the true value as it would require disclosing important information that you’d likely not be allowed to share.
What I do notice - and I'm not saying this is true for you (I don't know) - is that people get excited about technology like kubernetes or something equivalent, but it creates an additional burden that is totally not proportional to the benefits of said technology.
Stupid load-balancing proxy servers with a bunch of hosts behind them is extremely uninteresting and boring. But it's dead simple, so reliable and easy to scale horizontal or vertical as well.
And most of all: how much do you save by dynamically upscaling and downscaling as opposed to just keeping a static environment.
If you want to share that kind of perspective, I'd rather see a public post about it that others may benefit from.