Abstract: In recent years, the US telecom carriers, which had taken the lead in the field of IDC services, have gradually withdrawn from the IDC market, while Chinese telecom carriers are enthusiastic about developing IDC services, and regard cloud services as a blue sea market to promote the digital transformation of enterprises. Chinese and the US telecom carriers show opposite attitudes towards IDC services. The main reason is that Chinese telecom carriers occupy a dominant position in the traditional IDC field, and the business continues to grow steadily. However, the IDC services
of the US telecom carriers continues to decline because of the fierce competition from powerful third- party IDC op erators. In the long run, Chinese telecom carriers are facing less competitive pressure at this stage, but they will face the competition as fierce as the United States in the future. Therefore, Chinese telecom carriers should take precautions, take the US telecom carriers as a lesson, strengthen fine operation, enhance product competitiveness, innovate operation mode, and build an open ecosystem.

Key words: IDC services, telecom carriers, comparison between China and the United States