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Comment by sofixa | Hacker News Reader

Because they're constrained by Windows and Microsoft licensing, scaling out was never an easy option for them.

I'm curious. I saw a similar comment earlier, surely the surely windows licensing is just a drop in the bucket compared to the rest of the infrastructure costs?

I've not really looked at hosting anything on windows before, do they have unusual licensing terms in such a way that it would be a significant cost?

What constraints? Windows Server licenses are bought per-core and the company can easily afford plenty more. This is a non-issue.

But adding a new server includes having to buy new licenses, which is a consideration you don't have with OSes that under licensing. It costs extra money, and used to be per socket when their infrastructure was conceived.

So what? Licenses are not expensive, especially compared to all of their other costs like the dozens of staff, and paying an invoice isn't complicated. They maintain their own hardware in colocation facilities so they'll get a new license way before they even get the hardware shipped out.

Why does this make scaling out "never an easy option for them"?

>Because they're constrained by Windows

How? didn't they migrate to .NET Core?

Did they ? I must have missed it, but seems so :

https://www.infoq.com/news/2020/04/Stack-Overflow-New-Archit...

That doesn't mean they've moved away from Windows servers hosting it though.

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