July 7 : Amazon.com is looking to raise at least $25 billion through a U.S. dollar bond sale, Bloomberg News reported on Tuesday, in the company's latest push to fund its hefty AI investments. The size of the offering could increase depending on investor demand, the report said, citing people familiar with the matter. Amazon did not immediately respond to a Reuters request.A regulatory filing by the tech giant from earlier in the day showed it has filed for an eight-part offering of floating and fixed-rate notesTech companies have been tapping debt markets and launching equity offerings to fund their costly AI infrastructure build-out. Big Tech, including Amazon, Alphabet, Microsoft and Meta, are expected to spend more than $700 billion on AI this year. Facebook-parent Meta had earlier thi