A deal with OpenAI could put Amazon first to market with a new type of AI service for developers — but the two companies will have to tread carefully to avoid running afoul of OpenAI's deal with Microsoft.Why it matters: If successful, Amazon Web Services could land in the more enviable position at the leading edge of generative AI rather than being forced to compete mainly by delivering models more cheaply than rival clouds.Driving the news: Amazon and OpenAI on Friday announced a multi-pronged...