In line with the WP 10 of CHIST-ERA IV we are exploring the possibility to add a “Challenge” call to CHIST-ERA. In 2021 ? In this scheme, the call targets a very focused objective. The selected projects all share this common objective. Their progresses toward this objective is assessed every year through an evaluation campaign gathering all the projects and involving metrics and protocols implemented by the evaluation campaign organisers. The scheme combines competition among selected projects and cooperation: Data sharing and networking across projects are promoted. Horizon 2020 launched such an initiative in 2019 in the field of robotics: https://ec.europa.eu/info/funding-tenders/opportunities/portal/screen/opportunities/topic-details/ict-09-2019-2020. This may represent the opportunity for CHIST-ERA to engage into new activities. In particular for funding organisations able to fund applied research. This may also represents a follow-up opportunity for topics funded in past calls. The Challenge call would not replace one of the topics of the regular call of CHIST-ERA, it would be an additional call.