The vibe you’re recalling from LYSE if I recall correctly has more to do with appups/hot upgrades - they should be generally avoided unless you really need the functionality and are prepared to deal with the complexity. Releases are very easy to build and use, and I can’t imagine not using them for deployment. Erlang suffered from poor tooling on that front for a long time, but that’s not been the case for probably 5 years or more.
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