The StarLight Consortium participates in the international Data Mover Challenge (DMC), a key event of the SupercomputingAsia (SCA) conference series. StarLight participates both by designing and implementing the DMC international testbed and by engaging in the competition challenge. The competition, which is staged once every two years, brings together experts from industry and academia in a bid to test their software and solutions for transferring huge amounts of research data. DMC challenges international teams to demonstrate the most advanced and innovative solutions for data transfer across servers located in various countries that are connected by 100Gbps international research and education networks. The challenge focuses on optimizing point-to-point data transfers among sites to advance research collaboration and sharing. Participants from around the world compete by deploying the best software tools on Data Transfer Nodes (DTNs) that are set up within existing international networks across the globe. The DMC competition Co-organized by the HPC Centers from Australia, Japan, Singapore and Thailand, SCA is an annual international conference that encompasses an umbrella of notable supercomputing events with the key objective of promoting a vibrant and relevant HPC ecosystem in Asia.