This chapter outlines the ASSESSnet project [ASSESSnet: Language assessment in Virtual Mobility (VM) initiatives at tertiary level -- teachers' beliefs, practices and perceptions; grant number 845783; https://www.assessnet.site/home]. First, its underlying mission is explained in this introduction, before a detailed description of the compilation and analytical approach to data undertaken during the project trajectory is provided. Following the research methodology, main findings of the ASSESSnet project are summarised and conclusions drawn. [For the complete volume, "Assessing Virtual Exchange in Foreign Language Courses at Tertiary Level," see ED624433.]