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+---
+layout: "docs"
+page_title: "Namespaces - Vault Enterprise"
+sidebar_current: "docs-vault-enterprise-namespaces"
+description: |-
+  Vault Enterprise has support for Namespaces, a feature to enable Secure Multi-tenancy (SMT) and self-management. 
 
+---
+
+# Vault Enterprise Namespaces
+
+## Overview
+
+Many organizations implement *Vault as a Service* (or "VaaS"), providing centralized 
+management to a security or ops team while ensuring that separate teams within that 
+organization operate within self-contained environments known as "*tenants*." 
+
+There are two common challenges when implementing this architecture in Vault:
+
+**Tenant Isolation**
+Frequently teams within a VaaS environment require strong isolation from other
+users in their policies, secrets, and sometimes even their own identity entities 
+and groups. Frequently tenant isolation is a result of regulations such as [GDPR](https://www.eugdpr.org/),
+though it may be necessitated by corporate or organizational infosec requirements as 
+well.
+
+**Self-Management**
+As new tenants are added, there is an additional human cost in the management 
+overhead for teams. Given that tenants will likely have different policies and
+request changes at a different rate, managing a multi-tenant environment can
+become very difficult for a single team as the number of tenants within that
+environment grow.
+
+'Namespaces' is a set of features within Vault Enterprise that allows Vault
+environments to support *Secure Multi-tenancy* (or *SMT*) within a single Vault Enterprise
+infrastructure. Through namespaces, Vault administrators can support tenant isolation
+for teams and individuals as well as empower those individuals to self-manage their
+own tenant environment. 
+
+## Architecture
+
+Namespaces are isolated environments that functionally exist as "Vaults within a Vault."
+They have separate login paths and support creating and managing data isolated to a namespace
+including the following:
+
+- Secret Engine Mounts
+- Policies
+- Identities (Entities, Groups)
+- Tokens
+
+Namespaces can also be configured to inherit all of this data from a higher *parent* namespace.
+This simplifies the deployment of new namespaces, and can be combined with sentinel policies 
+to prescribe organization-wide infosec policies on tenants. 
+
+## Example Implementation
+
+
+
+## Setup and Best Practices
+
+A [deployment guide](/guides/operations/replication.html) is
+available to help you get started, and contains examples on namespace architecture.
+
+## API
+
+Namespaces supports a full HTTP API. Please see the
+[Vault Namespace API](/api/system/replication.html) for more
+details.