---
title: "FINBOURNE platform architecture"
slug: "finbourne-platform-architecture"
updated: 2026-06-05T09:31:59Z
published: 2026-06-05T09:32:55Z
canonical: "support.lusid.com/finbourne-platform-architecture"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://support.lusid.com/llms.txt
> Use this file to discover all available pages before exploring further.

# FINBOURNE platform architecture

The FINBOURNE platform is hosted on your choice of the AWS or Azure cloud computing platform. [Regions and VPN Support](/v1/docs/aws-and-azure-regions-and-vpn-support).

You can choose either [a single or a multi-tenant environment](/v1/docs/understanding-single-and-multi-tenant-hosting-options).

![](https://cdn.document360.io/d575ad81-c0ed-4980-bbd1-d59ac5c3de82/Images/Documentation/AdminPortal(2).png)

Key concepts:

- **Cell**: A dedicated set of resources running a single version of the FINBOURNE platform software. A cell must have one, and can have many, domains. All domains in a cell run on the same version of the platform software. A single tenant environment can have multiple cells.
- **Domain**: A logical tenant within a cell, identified by client ID (for example `acme-sit`) and addressed by URL (for example `https://acme-sit.lusid.com`).
- **Admin Portal**: An application for centrally managing cells and their domains, handling updates to the platform software and synchonisation of configuration resources.
- **Primary domain**: The domain in a cell that is licensed to communicate with the Admin Portal on behalf of all the domains in that cell.
- **Registered cell**: A cell that is licensed and set up to securely communicate with the Admin Portal, enabling domains to be managed centrally. Only available in single tenant environments at the moment.

[Get started with the Admin Portal](/v1/docs/admin-portal).