LOE will definitely depend on multiple factors
Your choice of Cloud/K8s provider
Your staff skill sets
Your Viya 3.5 contents
Your security model and requirements
Your compliance and auditing requirements
I think your best approach, is to pick a certain business area, and experiment with it if you can.
Talk to your SAS Account Executive, he/she can arrange that Prof Of Concept (POC)
Hope this helps
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