Zenotech Ltd are a UK based company developing the latest in Computation Fluid Dynamics solvers and Cloud based HPC systems. Their Computation Fluid Dynamics solver (zCFD) has been engineered to take full advantage of the latest developments in GPU technology. This talk will present the performance advantages that Zenotech see when using GPUs and the impact this has on their customers. It will showcase industrial problems that have been solved in a fast/cost effective manner using a combination of zCFD and the P100 and V100 GPU's available on AWS. Traditionally these cases are run on in-house parallel computing clusters but the larger number of GPUs per node with AWS have enable the solving of large CFD problems on a single instance. Benchmarking with zCFD demonstrates that a single P3 node is providing the equivalent performance to over 1100 CPU cores. As well as performance benefits, the spot market and on-demand nature of AWS provide some real cost savings for Zenotech's customers and opens up a scale of simulation that was previously not affordable. The session will present real world examples from Zenotech's customers in the aerospace, renewable and automotive sectors. The session will also show how Zenotech's EPIC platform makes the combination of zCFD and AWS GPUs a simple and cost effective solution for engineers.