platform. Any direct user access is granted solely for management and maintenance  of the data store, and appropriate monitoring and auditing of user and systems  access to the data store should be in place  • The solution proposed shall be compatible with the technology stack of the ECHA  Data Platform, ensuring the solution can seamlessly integrate with existing  components  • The estimated number of person-days for this request shall not exceed 500  • The duration of the assignment shall not exceed 6 months  Assessment questionnaire  The tenderer is requested to prepare an architecture to implement a common data store  addressing the above requirements.  The tenderer must provide a proposal on the concrete measures and proposed solution  addressing the question, as per the table below.  The proposed solution should not be a generic description of what may be possible. As  such, replies must be focused on addressing the scenario specifics and tenderers shall  avoid for instance inserting extracts of ‘context - free’ generic documentation. ID  Sub-criteria  Max points  5.1  Quality of the solution proposed - Describe the solution proposed,  addressing the following aspects:  i. Provide a complete architectural blueprint describing the  proposed solution. The architectural blueprint should in  addition include a rationale for the technology choices  ii. Based  on  the  architectural  blueprint,  propose  an  appropriate data quality framework and concretely,  describe how this is applied to the proposed solution  10  5.2  Quality of the methodology proposed, addressing the following  aspects:  i. Describe the methodology you propose and concretely how  you will apply it to this project  ii. Describe the estimation method, including your duration  and effort estimates for this project  iii. Provide your planning assumptions, and high-level project  plan containing: a decomposition of the project into  phases, deliverables and work packages, duration, effort  and resource/profile allocation, making use of your  previous estimates  6  5.3  Quality of the data governance processes applied:  i. Identify and elaborate on the relevant business and  technical aspects of data governance to be considered and  applied in the context of the scope of this project  4  36