Example Concept: A service mesh, like Istio or Linkerd, enhances microservices architecture by providing features such as load balancing, service discovery, and failure recovery. It abstracts the communication logic from the application code, allowing developers to focus on business logic. Service meshes also offer advanced security features like mutual TLS and fine-grained access control, along with observability tools for monitoring service interactions. However, they can add latency, require additional resources, and necessitate a learning curve for proper implementation and maintenance.