Amazon is reportedly in talks to become a cornerstone investor in SoftBank Group's Arm Ltd IPO. Arm's significance in cloud computing, especially in relation to Amazon Web Services, makes this potential involvement notable. Arm is seeking to raise $8-10 billion in the IPO and has been in talks with other technology companies. SoftBank hopes the IPO will help turn around its Vision Fund. The IPO is expected to take place on Nasdaq in September. Arm and Amazon have declined to comment.