Taken from CNBC’s Daily Open, our international markets newsletter — Subscribe today The " everything store " might have secured its biggest customer yet. On Monday, Amazon announced that it had signed a $38 billion deal with OpenAI , offering the ChatGPT maker access to Amazon Web Services' infrastructure. On the one hand, the move isn't too surprising — a continuation of OpenAI's spending spree as it looks to secure resources to run its power-hungry artificial intelligence models. On the