Alessandro Cerioni enhanced the OAuth2 authentication experience in the qgis/QGIS repository by streamlining the verification flow and improving post-verification messaging. He focused on reducing user friction by removing unnecessary interface elements and implementing automatic window closure or redirection, which guides users seamlessly back to the main application. Using C++, Qt, and frontend development skills, Alessandro delivered concise, actionable messaging to clarify next steps after authentication. His work emphasized maintainability through incremental, well-documented commits, prioritizing reliability and user onboarding. Over the month, he contributed two targeted features that improved both the usability and security posture of the OAuth2 authentication process.