European Open Procedure, Pursuant To Art. 71 Of The Legislative Decree. 36/2023, In Purchase Union Between The Ats Of The Metropolitan City Of Milan (Lead) And The Aattss Of Bergamo, Brescia, Brianza, Insubria, Pavia And Val Padana For The Acquisition Of An Information System And Related Assistance And Maintenance Services Dedicated To The Route Contractualisation, Evaluation, Reporting And Validation Of Data With The Health, Social Health And Social Management Entities Of The Paapss And Pipss Departments, For A Period Of 60 Months.