Highly appreciate your blog and paper for deeper insight into SAS 9 and SAS Viya programming review and best practices.
Programming differences, changes, replacement and execution are well explained and helpful in order to understand the migration from old sas to the new
world of sas multi-threaded, in-memory program execution.

Regarding R & Python, Anaconda for cluster management provides resource management tools to deploy Anaconda across a cluster. It can manage multiple conda environments and packages (including Python and R) on bare-metal or cloud-based clusters. Supported platforms include Amazon-virtual machines. It is not cas but open source have something now besides Hadoop.

Feel comfortable knowing about running our old sas code and macros in SAS Viya Program Run-time Environment (VPRTE).
Coming from life science background, because of compliance & governance, we don't change our code (it is locked), what-if we have to reproduce the same results.
Like I said, it is helpful in knowing there is a fallback. Is VPRTE similar to workspace server (for backward compatibility) or going to be between present and future?
Reason for the question above, you mentioned the need for having a separate workspace server other than cas & VPRTE on page 9 of your paper

Thanks,
Pritesh