---
title: Workers for Platforms
description: Run untrusted code from your customers or AI in secure, isolated sandboxes on Cloudflare's global network.
image: https://developers.cloudflare.com/dev-products-preview.png
---

> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/cloudflare-for-platforms/llms.txt  
> Use this file to discover all available pages before exploring further.

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# Workers for Platforms

Build a multi-tenant platform that runs untrusted code in secure, isolated sandboxes.

Workers for Platforms lets you run untrusted code written by your customers, or by AI, in a secure hosted sandbox. Each customer runs code in their own Worker, a secure and isolated environment.

## When to use Workers for Platforms

Use Workers for Platforms when you need to:

* **Run untrusted code at scale** \- Execute code written by your customers or generated by AI in a secure sandbox, with the ability to deploy an unlimited number of applications.
* **Build multi-tenant platforms** \- Give each customer their own isolated compute environment with complete separation between tenants.
* **Extend Cloudflare's developer platform to your customers** \- Use [bindings](https://developers.cloudflare.com/cloudflare-for-platforms/workers-for-platforms/configuration/bindings/) to give each customer access to KV stores, D1 databases, R2 storage, and more. Your customers get the same powerful tools, managed through your platform.
* **Give each application its own domain** \- Host applications under a subdomain of your domain (for example, `customer-name.myplatform.com`) or integrate with [custom hostnames](https://developers.cloudflare.com/cloudflare-for-platforms/cloudflare-for-saas/domain-support/) to allow customers to use their own domains.

## Features

Workers for Platforms provides tools to manage and control your customers' code:

* **[Custom limits](https://developers.cloudflare.com/cloudflare-for-platforms/workers-for-platforms/configuration/custom-limits/)** \- Set per-customer limits on CPU time and subrequests.
* **[Observability](https://developers.cloudflare.com/cloudflare-for-platforms/workers-for-platforms/configuration/observability/)** \- Collect logs and metrics across all user Workers in your namespace. Export to third-party platforms like Datadog, Splunk, and Grafana.
* **[Tags](https://developers.cloudflare.com/cloudflare-for-platforms/workers-for-platforms/configuration/tags/)** \- Organize, search, and filter user Workers by custom tags like customer ID, plan type, or environment.

---

## Reference architectures

Explore reference architectures that use Workers for Platforms:

[Programmable PlatformsWorkers for Platforms provide secure, scalable, cost-effective infrastructure for programmable platforms with global reach.](https://developers.cloudflare.com/reference-architecture/diagrams/serverless/programmable-platforms/)[AI Vibe Coding PlatformCloudflare's low-latency, fully serverless compute platform, Workers offers powerful capabilities to enable A/B testing using a server-side implementation.](https://developers.cloudflare.com/reference-architecture/diagrams/ai/ai-vibe-coding-platform/)

---

## Get started

[Get started](https://developers.cloudflare.com/cloudflare-for-platforms/workers-for-platforms/get-started/) 

Set up a dispatch namespace, dynamic dispatch Worker, and user Worker.

[How Workers for Platforms works](https://developers.cloudflare.com/cloudflare-for-platforms/workers-for-platforms/how-workers-for-platforms-works/) 

Understand the architecture: dispatch namespaces, dynamic dispatch Workers, user Workers, and outbound Workers.

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