“…In general, most authors conclude that ULLs are diverse and multidisciplinary spaces, where experimentation about innovative solutions is facilitated, with the heterogeneous presence of urban actors who can design, test, and learn from socio-technical developed innovations [24,28,31]. Likewise, the studies remark on the importance of actively engaging users who play a key role in ULL development [9,24,30,[33][34][35]. Steen et al established a definition of ULLs after scanning 90 place-based sustainable innovation projects in the Amsterdam area.…”