To delve deeper into the rise of trade in commercial services as the most important determinant of the recent increase in digital trade, this article offers a decomposition of international service trade using the latest release of the Inter-Country Input–Output (ICIO) tables. The analysis decomposes international service trade into a split between (a) direct services exports and services embodied in goods, (b) advanced economies and the major emerging markets, and (c) the major commercial services industries. We show that overall direct service exports have become more important relative to services embodied in goods, especially in advanced economies (the ‘cross-border’ effect). Further, we show that for emerging markets, the rise of the exports of services comes from the increase in volume of export of goods, which embed services and not because of an increased share of services embodied in the domestic value of exported goods (the ‘embodied volume’ effect). Finally, we show that the increase in services trade can be attributed to the increase in traded information technology (IT) services and not so much to that in financial and business services that are increasingly traded digitally across borders (the ‘plain vanilla digitalisation’ effect).

JEL Codes: F14, F15, G20

为了深入探讨作为近期数字贸易增长的最重要决定因素的商业服务贸易的兴起，本文使用最新版本的国家间投入产出 (ICIO) 表对国际服务贸易进行了分解。该分析将国际服务贸易分解为 (a) 直接服务出口和包含在商品中的服务，(b) 发达经济体和主要新兴市场，以及 (c) 主要商业服务行业。我们表明，相对于商品所包含的服务，整体直接服务出口变得更加重要，尤其是在发达经济体（“跨境”效应）。此外，我们表明，对于新兴市场，服务出口的增长来自货物出口量的增加，嵌入服务，而不是因为出口商品国内价值中体现的服务份额增加（“体现数量”效应）。最后，我们表明服务贸易的增长可归因于信息技术 (IT) 服务贸易的增长，而不是金融和商业服务贸易的增长，这些服务贸易越来越多地跨境数字化交易（“普通数字化”效应） ）。

JEL 代码： F14、F15、G20