I think it shows how release engineering hasn't been seriously funded at many companies. There are a bunch of tools, serving different communities that are used

I think it shows how release engineering hasn't been seriously funded at many companies. There are a bunch of tools, serving different communities that are used, but most of them operate in the context of the single server. Production reality is clusters of machines. We need better tools for managing cluster deployments and hot-swapping code. the Erlang platform takes on some of this, but doesn't seem to have picked up the following it probably deserves. I bet there are some lessons to be learned there.