Years before OpenAI became a global phenomenon with ChatGPT, competition from Amazon may have helped convince Microsoft to deepen its partnership with the startup.
New reports and court documents suggest Microsoft’s aggressive early backing of OpenAI was not only about AI ambition — it was also a strategic response to Amazon’s dominance in cloud computing through AWS.
At the time, Amazon Web Services was the undisputed cloud leader, and Microsoft was searching for a breakthrough that could help Azure compete. According to court filings tied to the legal battle between Elon Musk and OpenAI, Musk himself pushed OpenAI toward Microsoft Azure as early as 2016 and reportedly dismissed Amazon founder Jeff Bezos in internal conversations while advocating for Microsoft infrastructure.
That early cloud partnership evolved into one of the most important deals in tech history. Microsoft invested billions into OpenAI — including a landmark multibillion-dollar deal in 2019 and another massive investment in 2023 — long before ChatGPT became mainstream. The strategy gave Azure exclusive access to OpenAI technology and helped Microsoft gain ground in the AI cloud race.
Ironically, Amazon is now becoming one of OpenAI’s biggest partners.
In recent weeks, OpenAI loosened its exclusive arrangement with Microsoft, allowing Amazon to begin offering OpenAI models through AWS. Amazon and OpenAI also announced expanded cooperation on AI agents and cloud infrastructure.
Reports indicate OpenAI executives privately acknowledged that the Microsoft relationship, while “foundational,” also limited OpenAI’s ability to reach enterprise customers already committed to Amazon’s Bedrock platform. OpenAI reportedly described demand for its Amazon partnership as “staggering.”
The shift has created tensions between the longtime partners. Earlier this year, reports emerged that Microsoft considered legal action over OpenAI’s huge AWS deal, arguing it could violate Azure exclusivity clauses.
Analysts now see the AI industry entering a new phase where OpenAI is no longer tied primarily to Microsoft. Amazon, Google, Oracle, and others are competing to host and distribute OpenAI technologies as the company expands beyond the structure that helped launch ChatGPT.
