# Jan Koum (slim)

> Jan Koum is co-founder of WhatsApp. WhatsApp Business Platform (Cloud API) on Anchor Terminal, with grades, an about and public profiles.

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- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-28
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Co-founder, WhatsApp.

Jan Koum co-founded WhatsApp with Brian Acton, a fellow former Yahoo employee, and incorporated WhatsApp Inc.

## What Jan builds

- [WhatsApp Business Platform (Cloud API)](https://www.anchorterminal.com/tools/whatsapp-cloud-api.md), graded B, 67.2/100, in Messaging APIs. Meta's WhatsApp Business Platform Cloud API sends and receives WhatsApp messages for a business phone number through the Graph API, with inbound messages and status updates arriving by webhook. Access uses a Meta developer app and OAuth access tokens. Co-founder, WhatsApp, researched 2026-10-28.

## Works with

- [Alexander Davenport](https://www.anchorterminal.com/people/alexander-davenport/), Director of Product Marketing, monetization interfaces and advertiser tools
- [Andrew McCollum](https://www.anchorterminal.com/people/andrew-mccollum/), Co-founder, Facebook (now Meta Platforms)
- [Brian Acton](https://www.anchorterminal.com/people/brian-acton/), Co-founder, WhatsApp
- [Chris Hughes](https://www.anchorterminal.com/people/chris-hughes/), Co-founder, Facebook (now Meta Platforms)
- [Dustin Moskovitz](https://www.anchorterminal.com/people/dustin-moskovitz-2/), Co-founder, Facebook (now Meta Platforms)
- [Eduardo Saverin](https://www.anchorterminal.com/people/eduardo-saverin/), Co-founder, Facebook (now Meta Platforms)
- [Lauren Krainski](https://www.anchorterminal.com/people/lauren-krainski/), Senior Product Manager, WhatsApp Business Messaging Platform
- [Mark Zuckerberg](https://www.anchorterminal.com/people/mark-zuckerberg/), Founder, Meta

## Questions

### Who is Jan Koum?

Jan Koum co-founded WhatsApp with Brian Acton, a fellow former Yahoo employee, and incorporated WhatsApp Inc.

### What does Meta Platforms, Inc. make?

Anchor Terminal lists WhatsApp Business Platform (Cloud API) from Meta Platforms, Inc..

### How are Jan's tools graded?

WhatsApp Business Platform (Cloud API) is graded B, 67.2 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://www.linkedin.com/in/laurenkrainski/details/experience/
- https://www.linkedin.com/in/laurenkrainski
- https://business.whatsapp.com
- https://www.whatsapp.com
- https://developers.facebook.com/
- https://developers.facebook.com/documentation/business-messaging/whatsapp/support/
- https://en.wikipedia.org/wiki/Meta_Platforms
- https://en.wikipedia.org/wiki/WhatsApp

These are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched.