> ## Documentation Index > Fetch the complete documentation index at: https://docs.e6data.com/llms.txt > Use this file to discover all available pages before exploring further. # Detailed architecture walkthrough > A walkthrough of the e6data disaggregated SQL engine architecture for the open lakehouse. ### A disaggregated SQL engine, built for the open lakehouse e6data is a distributed SQL query engine that runs directly on your data lake — no ingestion, no proprietary copies, no format lock-in. Your data and catalogs stay inside your boundary; the engine connects to them in place, speaking the protocols your tools already use. *** **ARCHITECTURE** #### The architecture Clients in the customer boundary connect through the protocol layer. The distributed query engine — planners, executors, distribution and metadata services — plans and executes queries, reading data and catalogs that remain in the customer's environment. Each component scales independently. e6data architecture diagram This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.