Deno Subhosting is a robust platform designed to allow Software as a Service (SaaS) providers to securely run code written by their customers. The Subhosting API allows you to deploy untrusted code programmatically and at scale.

Key Features

• Ease of Use: Developers can write code in generic JavaScript or TypeScript without needing specific knowledge of Deno.
• Standards Compliance: Deno supports standard JavaScript and TypeScript and integrates widely-used web APIs like fetch and web cache.
• Deno-Specific Advanced Features: Offers advanced features like KV (Key-Value stores) which extend beyond typical browser capabilities.
• Rapid Deployment: Deno’s cloud products are designed to support extremely short deployment times that range from less than a second for simple applications, to around ten seconds for complex websites with numerous dependencies.
• Improved developer experience: Subhosting will manage the extensive effort of setting up secure infrastructure to run untrusted code in a public cloud for you.

Overview of Deno Cloud Offerings - Deno Deploy and Deno Subhosting

Deno provides two distinct cloud offerings, Deno Deploy and Deno Subhosting, each designed to support specific use cases while leveraging the same underlying infrastructure.

Deno Deploy

Deno Deploy is optimized for individual developers and small teams focused on developing and iterating on a limited set of first-party projects. This solution is ideal for hosting websites or applications, with deployment processes typically managed through GitHub integrations.

• Target Audience: Individual developers and small development teams.
• Deployment Integration: Primarily through GitHub for continuous integration and delivery.
• Use Cases: Hosting websites and applications.

Deno Subhosting

In contrast, Deno Subhosting is engineered to securely manage a larger volume of projects and deployments. It supports the deployment of untrusted code or functions through an API, making it suitable for scenarios involving multiple end-users contributing code.

• Target Audience: SaaS platforms requiring the capability to host customer-generated, untrusted code securely.
• Deployment Mechanism: Through a robust API designed for scalability and security.
• Use Cases: Large scale project hosting where end-users contribute the code.

The steps to implement subhosting are roughly as follows:

1. Create an organization and get an access token for the REST API
2. Create a project, and then create your first deployment for that project

Using these techniques, you can package up user code as "deployments", and execute that code on a Deno-provisioned URL or a custom URL you can configure yourself.

REST API reference and OpenAPI spec

For a complete reference for the REST API used to implement subhosting, you can check out the docs here. The Deno Deploy REST API also provides an OpenAPI specification which can be used with a number of OpenAPI-compatible tools.

We also offer SDKs in JavaScript, Python, and Go.