Kim, who has served as the head of Microsoft Game Studios for over four years, will be tasked with building Microsoft's future partnerships and developing growth strategies in his new position. Former Microsoft Games Studios Europe manager Phil Spencer will assume Kim's responsibilities as head of Microsoft's worldwide publishing efforts.

Meanwhile, Jeff Bell has resigned to pursue opportunities outside of Microsoft after over two years in his position. The marketing VP gained recognition among consumers after appearing at several of the company's press events and conference keynotes.

"The time is right for me to pursue my life's passion of consumer brand marketing and the creative and services that drive it." Bell said. "Coming from automotive, and now technology and entertainment, I am excited to expand to new industries and categories."

Several members of Microsoft's interactive entertainment marketing team will carry on Bell's responsibilities while the company searches for a replacement.