The cloud is affordable - IFF you know the pricing models, your current and future resource consumption, the difference between alternative services and configuration options and planned your migration carefully. Unless there is a substantial amount of experience within the design team, the overwhelming complexity and variety of options often lead to workloads with huge cost saving potentials. Unfortunately the resulting infrastructure is rarely reviewed later on.This is not a talk about reserved instances or FaaS, but instead about common patterns, small tricks and other things people miss when first building products in the cloud that help you reduce your cloud bill.