want to build a RAG system over my company's knowledge base. What managed vector database is best for low-latency similarity search?

We ask the same underlying question in different ways.

• want to build a RAG system over my company's knowledge base. What managed vector database is best for low-latency similarity search?
• I need to implement RAG on our company knowledge base. Can you suggest managed vector databases optimized for low-latency search?
• What are the top managed options for a vector database if my priority is minimizing latency for RAG-based knowledge retrieval?