Conference
A foreign citizen planning to enter Italy typically needs to obtain a Schengen visa, which is stamped in the traveller's passport—a document issued by their country of citizenship. Various visa categories cater to different purposes, and for GUADEC25, the relevant category is the Business Visa. This visa is specifically designed for individuals seeking temporary entry to the Schengen area for business purposes.
Check out this official page for more information.
A guided procedure will help you decide if you need to apply for a visa based on your nationality, country of residence, reasons for your visit and length of stay.
If you need a visa for Italy, you will be provided with all the information and forms needed to submit your application.