In modern application development and architecture, there has been a big push from monolithic, large applications that can do everything a product would need, to many smaller services that have a specific purpose. This onset has brought on the age of microservice frameworks (micro-frameworks), with the goal of making it easier to prototype, build, and design applications in this paradigm.
Microservices are a popular software design architecture that breaks apart monolithic systems. A microservice application is built as a collection of loosely coupled services. Each microservice is responsible for a single feature. They interact with each other via communication protocols such as HTTP.
Microservices are loosely coupled software that provides flexibility and scalability to a cloud environment. However, securing this open architecture from vulnerabilities and malicious actors can be challenging without a service mesh. This blog post will demonstrate how you can create an Istio and Calico integration to establish a service mesh that will manipulate HTTP traffic in the application layer.