  Jets are produced by processes involving high momentum transfer of initial
partons at high energies. Comparing jet production in pp and nucleus-nucleus
collisions will allow us to study the jet-quenching effect caused by the hot
and dense QCD medium produced in nucleus-nucleus collisions when energetic
partons traverse the medium. In particular, systematic studies of jet
production in different multiplicity environments will provide in-depth
understanding of the medium properties and their evolution from small to large
systems. In small systems and high multiplicity events, the bulk properties
extracted by the low transverse momentum particle production behaves as if a
hot QCD medium was created, but such behaviour is not observed with hard
probes. Study of jet production in different multiplicity proton-proton
collisions then helps to explore the QGP existence in small systems.
  In this proceeding, the jet cross section measurements in different collision
systems using the data taken by ALICE during the LHC Run 2 are presented. The
nuclear modification factor of jets are presented to characterize the
jet-quenching effect. We observe that more jets are produced in high
multiplicity bins compared to the inclusive one, while the jet production
enhancement in high multiplicity environments has weaker jet $p_{\rm T}$ or
resolution parameter dependences. In order to study the jet collimation
properties, the jet cross section ratios for different jet resolution
parameters are also measured and compared to theoretical models. As expected,
the jets get more collimated at high $p_{\rm T}$ in numerous multiplicity bins,
with no collision energy or multiplicity dependence when compared to earlier
results.
