
China-based Alibaba Cloud ranks among the companies to watch. Although not well-known in the United States, the company appears to be preparing moves in Europe. Chief among them: A potential Alibaba-BT partnership to reach European customers.
IBM Cloud Services: Still Growing
Also, No. 5 global player IBM continues to drive growth -- with annual "as a service" revenues hitting an $11.1 run rate during the company's latest quarter. Still, it's unclear if the technology giant is actually gaining "as a service" market share against AWS, Microsoft and Google.
IBM market share has been relatively stable at around 8 percent, thanks primarily to its strong leadership in hosted private cloud services, Synergy Research Group indicated in Q1 2018.