Microsoft Corp.’s Mikhail Parakhin, head of the company’s Bing search engine and advertising businesses, will exit those roles and look for a new position, a week after the software giant named Mustafa Suleyman to oversee consumer artificial intelligence work and asked Parakhin to report to him.Parakhin, who had been chief executive officer for advertising and web services, will report to Chief Technology Officer Kevin Scott while searching for his next role, Microsoft said. Parakhin also oversa...