Jeff Bezos, Amazon founder, and CEO wrote the following memo to his employees around the year 2002. It got known as the “Bezos API Mandate” or “Amazon API Mandate”.

Jeff Bezos, Founder of Amazon, and Author of the first API Mandate
Jeff Bezos, Founder of Amazon, and Author of the first API Mandate

The Amazon API Mandate

According to an Amazon employee at that time, the memo was sent as an email to all employees of the company. It went something along these lines:

1) All teams will henceforth expose their data and functionality through service interfaces.

2) Teams must communicate with each other through these interfaces.

3) There will be no other form of interprocess communication allowed: no direct linking, no direct reads of another team’s data store, no shared-memory model, no back-doors whatsoever. The only communication allowed is via service interface calls over the network.

4) It doesn’t matter what technology is used. HTTP, Corba, Pubsub, custom protocols — doesn’t matter.

5) All service interfaces, without exception, must be designed from the ground up to be externalizable. That is to say, the team must plan and design to be able to expose the interface to developers in the outside world. No exceptions.

6) Anyone who doesn’t do this will be fired.

— Jeff Bezos

This mandate resonates with many API professionals because it addresses the core challenge of many API initiatives: Everyone wants to use APIs to build innovative solutions, but no one wants to invest in building them. This is obviously a deadlock! Bezos discovered this deadlock situation within his organization and resolved it.

This API manifesto is often seen as the cornerstone of Amazon’s success. APIs were built as a consequence of the memo. And those APIs served as the foundation for Amazon Web Services (AWS), Fulfillment By Amazon (FBA), and Amazon Alexa. But there is more.

The Amazon API philosophy did not only allow for building innovative products within a short-term time-horizon. APIs enabled Amazon to shift to a scalable ecosystem and platform business model.

What does this mean for you?

Obviously, that worked for Amazon. If you are on a mission to introduce “API first”, “API culture” or “API thinking” in your company, the API mandate can be immensely helpful. But not word-by-word, rather as a lighthouse, to orient yourself on.

The API mandate of your company needs to be tailored to the environment and culture that is established — but it should stretch it a bit, so you get the necessary changes, with the dev team, the architecture team, and the strategists of ecosystems and platforms.

It is not an easy task, to define effective API rules. If you don’t know how to get started or you are stuck, then sign up below and get the free mini-eBook “The Thinking behind the Amazon API Mandate”.

Mini-eBook: The Thinking behind the Amazon API Mandate

This eBook is a detailed breakdown of the ideas and concepts that make the API mandate so effective and successful at Amazon. It can help you to transfer these ideas to your company.

To receive your ebook, sign up via LinkedIn or via email below.


The Thinking behind the Amazon API Mandate
Mini-eBook: The Thinking behind the Amazon API Mandate
The API Mandate – Install API Thinking at your Company

Also published on Medium.

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Matthias Biehl

As API strategist, Matthias helps clients discover their opportunities for innovation with APIs & ecosystems and turn them into actionable digital strategies. Based on his experience in leading large-scale API initiatives in both business and technology roles, he shares best practices and provides both strategic and practical guidance. He has stayed a techie at heart and at some point, got a Ph.D. Matthias publishes a blog at, is the author of several books on APIs, and regularly speaks at technology conferences.