Performance tuning applications in the public cloud is both easier and harder than on your own server hardware. Its much easier to scale up and scale out in the cloud but you generally dont have much (if any) control over the hardware. With public cloud, you take the building blocks offered by the cloud infrastructure and design the application architecture to scale based on the capacity planning requirements and scalability testing results. In this session, well talk through our experiences scaling and performance tuning the RightScale platform in the cloud and share tips for sizing, auto-scaling, monitoring, and troubleshooting large-scale cloud deployments.