I asked a co-worker to help me understand the differences between the two systems/appilcations, and here’s what he said (with PII removed). I am publishing it here because I think it’s a great narration:

My background using Lucene, Solr, and ElasticSearch: a few years ago, I was asked to participate in a project as the architect, lead developer, and manufacturing SME.  Let’s call it KTRP.

KTRP was purposed for many functions/capabilities; one being the aggregation, indexing, search, and other NLP capabilities against product engineering documents, tech specifications, and support documentation. I chose Lucene as the index/search engine.

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