Research on the coordinated development of cross-border e-commerce and logistics under the background of big data

Cross-border electronic platform trade is an important embodiment of the digitalization of international trade, with much attention and response to national policies. This is a global business activity in which traders from different countries negotiate and conclude deals online, and the flow of goods is realized through international transportation. Taking the effectiveness of the coordinated development of cross-border trade and international transportation as the direction of exploration, we study the development mechanism of the harmonious, proper coordination, and virtuous cycle of both from the digital background. According to the established model assumptions, based on the principles of science, objectivity, operability, and representativeness, the evaluation system of coordinated development level is constructed, and the subsystem sequential covariate efficacy function and the composite system coordination degree are calculated. From the results of correlation and coordination degree analysis, it shows that the total volume of transactions in this form of trade grows from $1.4 trillion in 2013 to $8.7 trillion in 2020, with an average annual growth rate of 32%. The orderliness of the cross-border logistics subsystem keeps increasing between 2013 and 2020, and the growth rate reached an average of 15.84 %/year. On the whole, the orderliness of each of the two subsystems steadily increases year by year. The resulting coordinated development trend of electronic trade between countries and international transportation coincides with the electronic trade between countries stepping into a brand-new development period, which is sufficient to verify the science and reasonableness of the evaluation system.