It is to me. And I agree that the term is losing value because it's becoming ubiquitous but it's the differentiation from the first versions of ChatGPT etc., which were purely user input -> LLM -> output driven.

The answer would be yes. It's about using stored knowledge to increase the accuracy of the answer and evidence surfacing.

It doesn't have to be a vector database.

Kapa is one of the few companies doing RAG right.