From autumn 2024, the Central European Academy Professors' Network has launched 8 new research groups. The first of these groups was the conference of the "Successful EU Enlargement" group, entitled "EU Enlargement and Successful Integration: Lessons Learned". The first conference was a retrospective, focusing on individual country experiences. In the first research phase, most members of the network focused on country reports. This conference concluded this phase. Its aim was to provide information on specific experiences and issues in the accession process of each country that should be highlighted and that are relevant to the integration process.