b. Each referenced contract must have been performed during  the timeframe from 23/11/2016 to  08/01/2021  and resulting  in an accepted final Report/Study. c. All following domains must be covered by at least one  referenced contract, and each referenced contract must cover  at least two of the following domains:  - IT consultancy for high level design, analysis, architecture  and integration in the field of Regulatory Science  - Business model tools, or optimisation, or dynamic analytics,  or  semantic  technologies  or  applied  science  and  implementations - Interoperability between components of highly-distributed  Information Systems and analysis of e-Government  Services  - Secured digital exchange of data and documents between  public administrations and/or businesses in a cross-border  context - Data Science, or Big Data, or Data analytics - Cloud & Collaboration  – Development or integration of  collaboration platforms making use of a combination of on  premises, hybrid or Cloud technologies 4. Minimum volumes for each referenced contract for Information systems development: a. Engagement of IT experts corresponding to the relevant IT  profiles listed in Annex 11 of the Technical Specifications.  b. The work related to the referenced contracts must have been  performed during a continued period of maximum 6 months,  during the timeframe from 23/11/2016 to  08/01/2021  and  must have resulted in the production of a pilot, prototype or  Minimum Viable Product. c. Each of the contract references must cover at least 2 of the  following  minimum  requirements,  and  each  minimum  requirement must be fulfilled by at least one contract  reference:  - Overall value of the referenced contract of at least 500 000  EUR for the whole duration;  - Resulting in a release of a production system that has been  maintained and supported during minimum 1 year; - Services provided on the basis of a Service Level  Agreement (including, among others, service levels,  performance indicators for monitoring performance and a  compensatory system for underperformance) or  equivalent;  21