runsonwhat

Stack's tech stack

What does Stack use?

Stack (stackav.com) uses at least 25 tools we can see from public records, including Amazon Web Services for hosting, Microsoft 365 for email and documents, Cloudflare for content delivery and Proofpoint for security. Last checked .

LinkedIn
Company page
Re-check liveVisit stackav.com
Tools found
25
Categories
11
Layers
4 of 5
Last checked
Oct 2026

Stack'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

6 tools, what the product is built with

Frontend

AI

Go-to-market

1 tool, how they find and keep customers

Marketing

Company Ops

15 tools, what the team runs on day to day

Workspace

Collaboration

Dev Tools

Finance & Legal

Security & Compliance

Other traces

Companies like Stack also use

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

Companies with a stack like Stack's

Ranked by shared tools, with rare tools counting more.

Stack tech stack FAQ

What tools does Stack use?

We've found 25 tools at Stack (stackav.com). Edge & Hosting: Cloudflare, Amazon Web Services and Amazon CloudFront. Application: React, Anthropic and Tailwind CSS. Company Ops: Microsoft 365, Google Workspace and Atlassian. Last checked October 6, 2026.

What cloud does Stack run on?

Stack uses Amazon Web Services for hosting. We found Amazon Web Services through website code.

What email provider does Stack use?

Stack uses Microsoft 365 and Google Workspace for email and documents. We found Microsoft 365 through DNS verification records.

Does Stack use Microsoft 365?

Yes. We found Microsoft 365 at Stack through DNS verification records. Microsoft 365 is used by 517,577 companies we track.

How does runsonwhat know what Stack uses?

We read public traces only: Stack'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.