Аннотация:The article examines the trends in the development of models of trade,investment and economic integration in the region of Southeast Asia and the post-Soviet space. Particular attention is paid to new trends in the escalation of multilateral trade agreements. Such agreements, which previously used the WTO platform, are increasingly beginning to act as an alternative to it. In this regard, the issues of mutual influence of participants due to the development of trade, investment activity, the placement of TNC productions, the optimization of economic activities in the light of digitalization, the development of e-commerce, logistics, banking technologies are increasingly regulated by mega-regional agreements. The complex activity of overcoming trade barriers by such different countries within the framework of the mega agreement and their willingness to consistently increase the level of trade and investment cooperation between the participants is certainly one of the features of modern Asia-Pacific regionalism. Being the largest trade and integration bloc of the post-Soviet space, the EAEU is a platform for promoting the geopolitical and economic interests of its participants in the foreign policy space. Currently, the EAEU is the only functioning integration association promoting the interests of the union with third countries, including in the East Asian direction.