The Studying Abroad pilot has implemented and validated three cross-border SDG procedures that facilitate student mobility within the EU: applying to public higher education, applying for study grants, and diploma recognition. The procedures are based on the once-only principle, the use of electronic identities, the use of trusted sources of electronic evidence, and the system for the exchange of evidence between competent authorities. Other approaches, such as the use of digital wallets, have also been piloted. We will present lessons learnt from the piloting and highlight the benefits for various stakeholders, e.g. students, universities and public authorities.