Many enterprise applications intertwine code that defines an app’s behavior with code that defines its network communication and other non-functional concerns. The “service mesh” pattern, implemented by platforms like Istio, helps you push operational issues into the infrastructure so the application code is easier to understand, maintain, and adapt. Istio in Action teaches you how to implement a full-featured Istio-based service mesh to manage a microservices application. With the skills you learn in this comprehensive tutorial, you’ll be able to delegate the complex infrastructure of your cloud-native applications to Istio! Istio in Action is a comprehensive guide to handling authentication, routing, retrying, load balancing, collecting data, security, and other common network-related tasks using the Istio service mesh platform. With author Christian Posta’s expert guidance, you’ll experiment with a basic service mesh as you explore the features of Envoy, Istio’s service proxy. With helpful diagrams and hands-on examples, you’ll learn how to use this open-source service mesh to control routing, secure container applications, and monitor network traffic. You’ll also bring Istio to legacy systems without changes to your applications and discover how to use Istio in a multi-cloud world with the data layer deployed on a cluster like Kubernetes.