This volume collects revised versions of some of the papers presented at the S- ond IST/FET International Workshop on Global Computing held in Rovereto, Italy (9¿12 March, 2004). The workshop involved all the thirteen projects funded under the IST/FET proactive initiative on GLOBAL COMPUTING: AGILE; CRESCCO; DART; DBGLOBE;DEGAS;FLAGS;MIKADO;MRG;MYTHS;PEPITO;PROFUN- DIS; SECURE; SOCS. The ?rst aim of the GLOBAL COMPUTING initiative is the development of paradigms for building ?exible, dependable, secure, robust and e?cient systems. Primaryresearchconcernsaretheco- ordination,interaction,security,reliability, robustness, and risk control of the entities in the global system. The ultimate goaloftheresearchactionistoprovideasolidscienti?cfoundationforthedesign of such systems, and to lay the groundwork for achieving e?ective principles for building and analysing them.