Oh, now what? Another technobabble name - megaservice! What is a megaservice? A megaservice is a microservice that is capable of processing up to one million logical operations per second. In this context, the service prefix indicates the expected maximum sustained per second logical operation throughput. In this talk, we will look at the more common deca-service (tens of LOPS), hecto-service (hundreds of LOPS), and kilo-service (thousands of LOPS) implementation techniques. We examine some of the common performance bottlenecks and look at methods used to push services to higher throughput levels. I'll share our experiences with a demo microservice application that we are using to push the cloud service providers to their limits. The demo application is composed of two Akka CQRS microservices. The app provides an interactive world map UI that visualizes the distribution of IoT devices spread across the planet. With the click of the mouse, we generate thousands, tens of thousands, even millions of IoT devices and observe how various databases and cloud systems react when push to the limit. All of the application code is built using OSS such as Akka, Java, JavaScript, and Kubernetes. The demo app is available for you to use as a learning tool for building your megaservices.