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Hi Eric, I use different server environments and languages (Java, Scala, R, PHP, and less frequently Perl or Python) depending on the project. I usually developing on an Ubuntu notebook, and use git to sync code with the server. For ETL I dominantly use Spark sometimes together with Hadoop. The good thing in Spark is that you can run the same code, the same way in standalone mode or in a cluster, the Spark API take care of the parallelization. The bad thing is that it supports only 4 languages. If I would like to create an interactive data visualization the output of Java/Scala/R code is CSV or JSON which works well with D3.js JavaScript library. Best, Péter 2018-01-15 18:33 GMT+01:00 Eric Lease Morgan <[log in to unmask]>: > I’m curious to know how computing environment have changed in the past couple of decades, and what sorts of environments are currently most prevalent. —E -- Péter Király software developer GWDG, Göttingen - Europeana - eXtensible Catalog - The Code4Lib Journal http://linkedin.com/in/peterkiraly