---
summary: How Scuttle is organised and what a shared Galera cluster means for your
  application.
title: Concepts
path: concepts
status: published
---

# Concepts

These pages explain the model behind Scuttle: how tenants, realms, databases and accounts relate, how access is granted, and which MariaDB features are not available on a shared cluster.

- [Tenants, realms and names](/docs/scuttle/concepts/tenancy) — the hierarchy, the naming rules, roles and privilege profiles.
- [Limitations](/docs/scuttle/concepts/limitations) — what a shared Galera cluster does not support. Read this before migrating.