Abstract The paper presents experimental and modelling results of a comparison of negative (NT) and positive&#xD;(PT) triangularity ASDEX Upgrade (AUG) discharges using the plasma shapes presently foreseen in the&#xD;DTT tokamak, under construction in Italy. This work is part of a broader effort of investigation to understand&#xD;whether the good properties observed in NT scenarios in DIII-D and TCV may be extrapolated to&#xD;the DTT device and more in general to DEMO future operations. The experimental results have shown a&#xD;practical gain of running these AUG plasmas with only ECRH and mixed NBI+ECRH phases in negative&#xD;triangularity, even if they access the H-mode. Indeed, the NT electron kinetic profiles recover in all cases&#xD;the PT electron pressures inside mid-radius due to reduced transport in the region ρtor = 0.7 − 0.9, while&#xD;exhibit lower individual ELM (Edge Localised Mode) energy losses. The ion pressure and expected fusion&#xD;performance are comparable in the case of similar densities. Integrated modelling has been performed using&#xD;the transport solver ASTRA and the quasi-linear turbulent model TGLF, investigating the transport properties&#xD;of these discharges. The modelling reproduces the experiments qualitatively with reasonable accuracy.&#xD;Nonetheless, the heat transport in NT cases is partially overestimated. This may be because TGLF uses&#xD;the Miller equilibrium, which approximates the magnetic flux surfaces as up-down symmetric. In the case&#xD;of these asymmetric NT shapes, the simulated outer surfaces lose part of the tilt with respect to the z-axis,&#xD;reducing the upper δ < 0 effect. A numerical test to discern the impact of the geometry by symmetrically&#xD;flipping the shape has shown a beneficial effect of the negative triangularity on heat transport.