runsonwhat

Substack's tech stack

What does Substack use?

Substack (substack.com) uses at least 17 tools we can see from public records, including Amazon Web Services for hosting, Google Workspace for email and documents, Zendesk for customer support and Google Analytics for analytics. Last checked .

Re-check liveVisit substack.com
Tools found
17
Categories
11
Layers
5 of 5
Last checked
Oct 2026

Substack's stack, layer by layer

Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.

Edge & Hosting

3 tools, where the bytes are served from

Hosting & Cloud

CDN & Edge

Application

2 tools, what the product is built with

Frontend

Media & UI

Data & Observability

4 tools, what they measure and store

Monitoring

Analytics

Go-to-market

5 tools, how they find and keep customers

Marketing

Ads & Pixels

Support & Docs

Company Ops

3 tools, what the team runs on day to day

Email Delivery

Workspace

Companies like Substack also use

Tools common among companies with a similar stack that we haven't found at Substack.

Companies with a stack like Substack's

Ranked by shared tools, with rare tools counting more.

Substack tech stack FAQ

What tools does Substack use?

We've found 17 tools at Substack (substack.com). Edge & Hosting: Cloudflare, Amazon Web Services and Amazon CloudFront. Application: Google Fonts and React. Data & Observability: Google Analytics, Sentry and Datadog. Go-to-market: Google Ads, Meta Pixel and Zendesk. Company Ops: Google Workspace, Mailgun and Postmark. Last checked October 2, 2026.

What cloud does Substack run on?

Substack uses Amazon Web Services for hosting. We found Amazon Web Services through website code and custom domain.

What email provider does Substack use?

Substack uses Google Workspace for email and documents. We found Google Workspace through email records.

What does Substack use for customer support?

Substack uses Zendesk for customer support. We found Zendesk through custom domain, email records and website code.

What analytics tools does Substack use?

Substack uses Google Analytics and Segment for analytics. We found Google Analytics through website code.

Does Substack use Cloudflare?

Yes. We found Cloudflare at Substack through DNS records and website code. Cloudflare is used by 568,557 companies we track.

How does runsonwhat know what Substack uses?

We read public traces only: Substack's DNS and email records, certificate logs, the code its website loads, and published subprocessor lists. A tool is listed only when a direct record backs it up. DNS is rechecked weekly and the website monthly.

We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.