Service Mesh for Financial Services: Istio vs Linkerd in Regulated Environments
Service meshes solve the wrong problem if you adopt them for the wrong reasons. In financial services, the reason is not traffic management or observability — it is security and compliance. Every service-to-service communication must be encrypted, authenticated, and auditable. Manual certificate management and network policies do not scale when you have hundreds of microservices across multiple clusters. We have deployed both Istio and Linkerd in production at banks and fintechs. The choice depends on your security requirements, operational maturity, and team expertise — not which mesh has more GitHub stars. ...