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Microsoft Ends OpenAI Cloud Exclusivity, Opens to AWS, Google

4/28/2026

Summary

Microsoft Ends Exclusivity

On April 27, 2026, Microsoft and OpenAI ended their exclusive cloud-hosting pact, allowing OpenAI models on AWS and Google Cloud.
Microsoft stays the primary partner, retains a non-exclusive IP license through 2032, will receive a 20% revenue share until 2030, and will stop paying a share on Azure-resold OpenAI products.
Microsoft still owns roughly 27% of OpenAI, valued near $225 billion, clearing the way for Amazon’s up-to-$50 billion investment.

Summary

Microsoft Enables Royalties

The agreement replaces Microsoft’s “chokepoint” role with a “distributed royalty” system that taxes OpenAI traffic on any cloud.
Acting as a tax collector, Microsoft moves from exclusive control to broader participation in the AI value chain, lowering regulatory risk.
With a capped revenue-share, 27% equity stake and the royalty model, Microsoft and Amazon can capture growth from fast-expanding inference workloads.

Summary

OpenAI Goes Multi-Cloud

OpenAI’s new multi-cloud option lets enterprises on Amazon, Google or other clouds embed AI directly into their existing infrastructure.
The expanded AWS agreement will provide $100 billion of compute over eight years, complementing Amazon’s up-to-$50 billion investment.
Revenue chief Denise Dresser said the prior Microsoft-only arrangement limited OpenAI’s ability to serve enterprises where they operate.
Long-running AI agents increase compute demand, shifting margin competition toward the cloud providers that host them.

Summary

Musk Lawsuit

Jury selection begins Monday in the lawsuit pitting Elon Musk, OpenAI and CEO Sam Altman against each other.
Musk asks a federal judge to reverse OpenAI’s recent restructuring and restore its nonprofit status.
Analysts say the revised cloud partnership clears a path for OpenAI to launch an initial public offering.
Investors view the cloud-first strategy as lowering barriers that previously limited OpenAI’s market expansion.

History

Historical Context

In March 2006 Amazon launched S3 and later EC2, creating the first public cloud that broke the traditional on-premise model. Microsoft entered the market with Azure in February 2010, sparking competition that grew AWS’s share to about 31% of global infrastructure by 2023. In 2026 OpenAI announced a multi-cloud strategy with Amazon, Microsoft and Google, ending reliance on a single provider.

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Microsoft Ends Exclusivity

On April 27, 2026, Microsoft and OpenAI ended their exclusive cloud-hosting pact, allowing OpenAI models on AWS and Google Cloud.
Microsoft stays the primary partner, retains a non-exclusive IP license through 2032, will receive a 20% revenue share until 2030, and will stop paying a share on Azure-resold OpenAI products.
Microsoft still owns roughly 27% of OpenAI, valued near $225 billion, clearing the way for Amazon’s up-to-$50 billion investment.

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