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Subprocessor list
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https://marimo.io/pages/legal/subprocessors
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Subprocessors
Last updated: April 21, 2026
Marimo uses the third-party subprocessors listed below to help deliver molab, marimo Community Cloud, and our marketing and public websites. We require each subprocessor to provide security and confidentiality protections consistent with our obligations to our customers.
Marimo is part of CoreWeave. Our services are delivered on CoreWeave’s infrastructure and are covered by CoreWeave’s Privacy Policy. The list below enumerates the additional third parties we use to operate our products.
#Infrastructure subprocessors
Subprocessor	Purpose	Location
CoreWeave	Notebook execution, kernel runtime, and application hosting for molab	United States
Cloudflare, Inc.	Edge workers, CDN, DNS, R2 object storage for notebooks and artifacts, and database connectivity	United States
Vercel Inc.	Hosting for the marimo.io marketing site, Community Cloud, and playground	United States
#Application subprocessors
Subprocessor	Purpose	Location
Clerk, Inc.	User authentication, session management, and organization membership	United States
Weights & Biases, Inc.	AI-assisted code completion and notebook generation	United States
GitHub, Inc.	OAuth sign-in and importing notebooks from public repositories	United States
#Operational subprocessors
Subprocessor	Purpose	Location
Functional Software, Inc. (Sentry)	Error monitoring, performance tracing, and debugging	United States
PostHog, Inc.	Product analytics and feature flagging	United States
Loops, Inc.	Transactional and marketing email delivery	United States
Notion Labs, Inc.	Collection of feedback and waitlist submissions	United States
#Changes to this list
We may update this page when we add, remove, or change a subprocessor. Whenever we make a significant change, we will refresh the date at the top of this page.
#Questions
If you have questions about our subprocessors or how we handle your data, please email us at contact@marimo.io.