2 years ago Pinterest began rolling out Envoy as the ingress load balancer for its dynamic web traffic. Since then they've expanded Envoy's footprint to include service-to-service HTTP and Thrift communication while supporting Kubernetes and non-Kubernetes deployments with a powerful homegrown control plane. Derek works on the Pinterest Traffic Team and led the initial rollout of Envoy for ingress load balancing. In this talk Derek will provide a comprehensive overview of how Pinterest's service mesh evolved from static configuration files to a dynamic centralized control plane, and explore some of the challenges in adapting a service mesh to legacy infrastructure as well as the benefits it has provided.