Aspen Mesh is a company that specializes in providing an enterprise-grade service mesh built on top of the open-source Istio platform. Their solution is designed to help organizations effectively manage the complexity of microservices architectures by providing observability, security, and operational control. Aspen Mesh offers features like traffic management, service discovery, load balancing, secure service-to-service communication, and policy enforcement. It aims to simplify the adoption of a service mesh by offering advanced insights, automation, and support tailored for enterprise environments.