Ask HN: Resources on how to build internal/enterprise tools?

There is a lot of attention given to consumer facing tools and how to build an MVP for that market segment. But what if your customer is internal (or a known enterprise)? Are there any good resources that discuss strategies on building these tools?

It seems like there is a lot of knowledge out there, as every company I have worked for has teams for internal tooling -- but very little public or communal knowledge.

Perhaps it's because the problem isn't as "sexy" as consumer tooling and products?