Driving up service levels and availability to shoppers is a key priority for both manufacturers and retailers. A fundamental factor in doing this is ensuring that the order picking process is both accurate and reliable. There is a growing trend, particularly among retailers, to do this by automating the case picking process. Although requiring significant capital investment, more and more retailers are finding it delivers significant operational and financial benefit. We look at one of the most recently installed operations serving 600 Migros stores in Switzerland.