Microsoft saved more than $500 million in its call centers alone last year by using artificial intelligence, Bloomberg News reported Wednesday.The tech giant last week announced plans to lay off nearly 4% of its workforce as it looks to rein in costs amid hefty investments in AI infrastructure. In May, the company had announced layoffs affecting around 6,000 workers.Microsoft, led by CEO Satya Nadella, announced last week it would lay off nearly 4% of its workforce. AFP via Getty ImagesAI tools were helping ...