This document provides an overview of virtual internationalization through telecollaboration. It discusses the TILA project, which aimed to innovate foreign language teaching in secondary schools across Europe through integrating telecollaboration activities. The document outlines the goals and activities of TILA, including teacher training, development of digital tools and tasks for telecollaboration, and studies of the impact on students and teachers. Requirements for successful telecollaboration projects are also addressed, such as developing meaningful tasks and ensuring adequate integration into school curricula.