Cloud politics heat up

OpenAI told employees that its Microsoft ties have blocked some customer deals as the company pushes a broader cloud strategy with Amazon Web Services. (cnbc.com) In a memo reported by CNBC on April 13, chief revenue officer Denise Dresser said Microsoft had “limited our ability” to reach customers that wanted to buy through Amazon Web Services, known as AWS. The same memo said demand for OpenAI’s AWS offering has been “staggering.” (cnbc.com) OpenAI and Amazon announced that partnership on February 27, 2026. OpenAI said AWS would become the exclusive third-party cloud distribution provider for Frontier, its platform for building and managing teams of artificial intelligence agents, and said Amazon would invest $50 billion in OpenAI. (openai.com) The cloud fight is about where companies buy and run artificial intelligence systems. Many large businesses already store data and software inside AWS, so selling OpenAI tools there lets customers add new models without moving workloads to Microsoft Azure. (cnbc.com) Microsoft and OpenAI publicly said on February 27 that their core deal still stands. They said Azure remains the exclusive cloud for “stateless” OpenAI application programming interfaces, meaning one-off model requests, and that revenue sharing from other cloud partnerships remains unchanged. (openai.com) That leaves OpenAI in a split setup: Azure keeps the central pipe for many direct model calls, while Amazon gets a defined role in distributing Frontier and hosting new stateful tools that keep memory and context across longer tasks. (openai.com, openai.com) OpenAI has been widening its infrastructure base for more than a year. On January 21, 2025, it launched the Stargate project with SoftBank, Oracle, and MGX, saying the venture intended to invest $500 billion over four years in United States artificial intelligence infrastructure, with $100 billion deployed immediately. (openai.com) Even that announcement kept Microsoft in the picture. OpenAI said in January 2025 that it would continue increasing its use of Azure while adding compute through Stargate, a sign that the company expected demand to outgrow any single supplier. (openai.com) Amazon framed the new alliance as a long-term buildout, not a simple resale pact. OpenAI said it plans to consume 2 gigawatts of Trainium capacity on AWS and that the two companies will co-develop a Stateful Runtime Environment for production artificial intelligence applications and agents. (openai.com, aboutamazon.com) Microsoft, for its part, said collaborations with Amazon were “always contemplated” under its agreements with OpenAI and said it was “excited to see what they build together.” The public message from both companies is continuity, even as OpenAI’s internal memo described commercial limits inside that arrangement. (openai.com, cnbc.com) The result is a market where the biggest artificial intelligence company is selling through one cloud giant, relying on another for core interfaces, and building new capacity with a third set of partners. OpenAI’s own documents call that flexibility part of the plan; its memo suggests the politics of getting there are getting harder. (openai.com, openai.com, cnbc.com)