In practice, the hosting of the platform and websites will arranged by the European  Commission. For preparing and maintaining them, the contractor is expected to closely  collaborate with the relevant EC services.  In view of implementation and maintenance, the preferred content management system  (CMS) for any web development on the Europa domain is Drupal, release 8. INEA strongly  recommends tenderers to base their developments on this CMS, since with other systems the  maintenance effort during the project lifetime will be much higher.  Also the other web based activities (like newsletters, meeting registration or webinars) that  will make part of the contract must comply with the EU Web Guide. The tools offered as  Europa Webtools should be used for such activities in order to avoid the risks that come with  third party tools (see EU Web Guide).  Secured sections on the websites may be realized on the Europa domain through a wiki.For  any content published as part of this contract, the  Contractor  must declare that the opinions  expressed do not represent the contracting authority’s official position. Moreover, for any pre- existing content that should be published through the websites, the knowledge management  and sharing platform, or other channels of the  Techncial and Support Office , the  Contractor must seek consent from the owners or copyright holders of this content. This applies, e.g., for  earlier publications from the ETIP SNET. No document can be re-distributed by the  Technical  and Support Office  until this consent will have been granted.  Tenderers shall list in their offers the names of the core members of the project team  delivering the service. The team members in each of the roles below should be the ones that  contribute to fulfilling the selection criteria as defined in Section 3.2.3.2.  The following roles shall be covered:  The  Contractor may replace team members at any time, as long as the selection criteria  related to the team delivering the service remain fulfilled.  The  Project Steering Committee includes the  Contractor , INEA and the European  Commission DG ENER. Executive Committee members of the ETIP SNET may be invited as  adequate.  1.4.6. Deliverables  Meetings of the Project Steering Committee  1.4.5. Project team   project manager   lead editor   technical experts  18