> ## Documentation Index > Fetch the complete documentation index at: https://docs.explo.co/llms.txt > Use this file to discover all available pages before exploring further. # General > Explo's data querying microservice called FIDO. FIDO is Explo's data orchestration service. There are a lot of benefits compared to the previous data querying architecture including: * Persistent database connection management, eliminating connection latency for queries (connection and SSH tunneling time) * Longer timeouts configurable for queries * Querying databases within a certain region of the world for data residency requirements and speed optimizations * Connect via SSH tunneling, AWS PrivateLink, and more ## Resources * We’ve also [talked about it a bit on our engineering blog](https://www.explo.co/blog/explo-data-connector) if you’d like to read more. * Here is a slide that we presented with a partner showing one customer’s speed-up (your results may vary of course). Data Orchestration Results * Here is a talk that Gary (co-founder) gave about the query service **Optimizing Analytics Platforms with ClickHouse** (March 2025)