It's great to see more and more talk of vector search and vector databases. We've been promoting this technology for over a year now and have several intro articles for anyone looking to learn more[1], and a generous free tier on our vector search service[2] for anyone looking to give vector search a shot.
[1] https://www.pinecone.io/learn/
[2] https://app.pinecone.io/
We are also actively researching the space, and just recently published a paper on improving Google's ScaNN: https://arxiv.org/abs/2112.02179