PRODUCTION SCENARIO
A university archive is building a knowledge base over 9 million scanned pages. Researchers query it a few hundred times a day. Storage cost dominates the budget, and sub-second query latency is acceptable.
Which vector store will meet these requirements at the lowest cost?
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Answer: Amazon S3 Vectors
S3 Vectors is documented as best suited to infrequent query workloads, where it helps reduce the cost of retrieval augmented generation and semantic search. The other stores are supported knowledge base options, but they are provisioned for query throughput or graph workloads, which costs more for a few hundred queries a day.