Audience question on deploying JRuby Rails apps to Heroku, Railway or similar platforms. Heroku publishes a JRuby build pack with every JRuby release and it works just like the regular Ruby one. Any cloud platform with Java-application support can deploy JRuby easily because the JRuby command line and workflow mirror C Ruby's — usually just a config-file change (e.g. `ruby-install jruby` instead of `ruby-install 4.0`).