  The scalability and flexibility of microservice architecture have led to
major changes in cloud-native application architectures. However, the
complexity of managing thousands of small services written in different
languages and handling the exchange of data between them have caused
significant management challenges. Service mesh is a promising solution that
could mitigate these problems by introducing an overlay layer on top of the
services. In this paper, we first study the architecture and components of
service mesh architecture. Then, we review two important service mesh
implementations and discuss how the service mesh could be helpful in other
areas, including 5G.
