We will introduce the service mesh concepts and show how you can implement them in EKS. Service mesh is a technique for networking independent applications or services using configurations rather than code. The application network becomes an avenue for application metrics collection, an infrastructure for application security and resilience. It relieves developers from manually coding applications or service-to-service communication and saves them time for more productive tasks. The AWS version of service mesh is known as App Mesh. App Mesh allows you to create a distributed application or service network infrastructure in EKS for application observability, security, and resilience. You should understand the mesh architecture and be able to configure it by the time you finish this chapter.