ECHOES is an acronym for Empowering Communities with a Heritage Open EcoSystem. That is exactly what the result of the project should be: an open system which can be used by (groups of) heritage organizations to connect data on very diverse types of heritage objects and information objects related to heritage.
Ariela Netiv, Walther Hasselo, "ECHOES – cooperation across heritage disciplines, institutes and borders" in Proc. IS&T Archiving 2018, 2018, pp 70 - 74, https://doi.org/10.2352/issn.2168-3204.2018.1.0.16