South Korea's largest mobile operator SK Telecom (SKT) plans to invest KRW5 trillion ($4.1 billion) over the next three years to develop artificial intelligence (AI) and Internet of Things (IoT) technology and services. SKT said in a statement the investment strategy will focus on creating a "new ecosystem" for AI, self-driving cars and IoT, Yonhap news agency reported. Research will be coordinated with SKT's SK Broadband and SK Planet affiliates. A part of the investment will be allocated to support local start-ups, the operator said. At CES in Las Vegas last week, SKT said it held discussions with Samsung, Nvidia and Intel about cooperating on AI, connected cars and IoT initiatives, according to Yonhap.