Experimental findings of recent years blurred the frontier between large and small systems.
The features attributed to the Quark Gluon Plasma formation have also been found in smaller systems when measuring particle production in high multiplicity events.
These common features arise in multiple sectors, namely the particle dynamics (known as collective flow) and also when considering hadrochemistry (e.g., strangeness enhancement).
The limit in small systems where this non-trivial behaviour occurs, is of very high interest in the field and is actively being investigated.
This is carried out by performing multi-differential analyses and by selecting collision systems that are smaller than pp collisions.
The current experimental contour of the limits between large and small systems is discussed in these proceedings.