The use and spread of the VRE and their digital tools among scientists is a criterion for success. Obstacles are access and operation difficulties and a general aloofness towards research infrastructures. Therefore aspects such as “learnability”, “operability”, “functionality”, “stability” and “speed” are quite important (Gnadt et al. 2016)

Buddenbohm et al. asks: How intensive is the use by the target group? How many users has the VRE in relation to the total size of the potential user group? And for which sections of their scientific work processes scientists will use the VRE? (Buddenbohm et al. 2014, p. 17)