Traffic Director: Traffic management for open service mesh

With Traffic Director, deploy your service instances in multiple regions for resiliency and reach while requiring only a single service IP. Traffic Director provides GCP-delivered health checking at scale. Intelligent and rapid auto-scaling for your services Traffic Director gives you demand-driven autoscaling, allowing you to pay only for what you use, while scaling up quickly and intelligently without having to reach your cloud provider and without any pre-warming requirements.

Source: cloud.google.com