Amazon Web Services (AWS) has joined its US peers Microsoft and IBM in downsizing artificial intelligence research activities in mainland China amid ongoing geopolitical tensions.The company has decided to close its seven-year-old AI Shanghai Lablet due to “China-US strategic realignment”, according to Wang Minjie, the facility’s chief applied scientist, in an announcement posted on Chinese social media platform WeChat on Tuesday.The announcement has since been circulated online and its...