Istio is an open-source service mesh platform designed to connect, manage, and secure microservices-based applications running on Kubernetes or other container orchestration platforms. It provides a control plane that facilitates traffic management, security, observability, and policy enforcement for services within a distributed application architecture.
Istio helps implement features like traffic routing, load balancing, service discovery, and encryption between services, simplifying the management of microservices communication and improving their reliability and security.