More than 60 physicists and engineers from six universities and INFN units contributed to the AMS construction and commissioning, development of the data analysis tools and ground segment infrastructures.

Italian researchers, thanks to the support of INFN and ASI, have been responsible for the realization of four out of the five AMS sub-detectors (namely TOF, TRACKER, RICH, ECAL) and for the electronics of the TRD gas control system.  Italian industries developed the thermal control  and power distribution systems, the RICH conical mirror and the silicon sensors for the Tracker system.

Italian effort has continued uninterruptedly along the years in the:

- operation and monitoring of AMS at the CERN POCC;

- calibration and verification of detector performances;

- data analysis and computing support;

- space qualification of the new UTTPS system.

An integral master copy of the AMS-02 data is preserved at the CNAF,  the INFN computing data center where 15k HEP-SPEC06 of CPU and 2Pbyte of disk are available for AMS-02 data processing and Monte Carlo simulation. All public data from AMS-02 are easily retrievable from the ASI Space Science Data Center.