# Data One deployment architecture

Data One is a modular and distributed platform. Components can be installed on a single node or distributed across multiple machines depending on infrastructure and business requirements.

## Installation architecture Windows 

Data One installation on Windows is based on two components:

* **Data One Windows Installer**, which installs the local installer infrastructure on each node.\
  See this page for details: [Data One Windows Installer](/data-one-installation-manager/installation-on-windows/data-one-windows-installer.md).
* **Data One Installer**, which configures the Data One domain and manages component installation.\
  See this page for details: [Data One Installer](/data-one-installation-manager/installation-on-windows/install-data-mover-+-data-shaper-+-data-watcher/standalone-mode.md#start-the-data-one-installer).

## Deployment models

Data One supports **standalone and cluster deployments**. In both cases, components can be distributed across target machines to meet infrastructure, availability, scalability, and operational requirements.

### Standalone deployment

A standalone deployment consists of **independent installations running without cluster coordination**. 

Each node is installed in STANDALONE mode, uses only local configuration, and **is not managed by a Control Node**. Nodes are self-contained: there is no centralized orchestration, and components are installed separately on each node.

### Cluster deployment

A cluster deployment is based on a **centralized Control Node that manages multiple Node installations**.

In cluster deployments, Data One distinguishes between two roles: 

* the **Control Node** manages the domain and orchestrates one or more Nodes. 
* **Nodes** host runtime components but do not manage cluster configuration locally.

#### Control Node

The Control Node is the central management node in a cluster deployment.

It is responsible for:

* managing the domain configuration
* generating the yaml and nmcfg files
* generating database scripts and keystores
* creating the domain data package
* managing and orchestrating Nodes

#### Node

A Node is a runtime machine managed by the Control Node.

It hosts Data One components, such as CEMAN, STENG, DMZ Gateway, and Data Watcher, and supports remote install, update, start, and stop operations.


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