# Zenith documentation ## Table of contents - [authentication.md](authentication.md) — pageserver JWT authentication. - [docker.md](docker.md) — Docker images and building pipeline. - [glossary.md](glossary.md) — Glossary of all the terms used in codebase. - [multitenancy.md](multitenancy.md) — how multitenancy is organized in the pageserver and Zenith CLI. - [sourcetree.md](sourcetree.md) — Overview of the source tree layeout. - [pageserver/README](/pageserver/README) — pageserver overview. - [postgres_ffi/README](/postgres_ffi/README) — Postgres FFI overview. - [test_runner/README.md](/test_runner/README.md) — tests infrastructure overview. - [walkeeper/README](/walkeeper/README) — WAL service overview. - [core_changes.md](core_changes.md) - Description of Zenith changes in Postgres core