Google, IBM, and Lyft are proud to announce the first public release of Istio: an open source project that provides a uniform way to connect, secure, manage and monitor microservices. Our current release is targeted at the Kubernetes environment; we intend to add support for other environments such as virtual machines and Cloud Foundry in the coming months. Istio adds traffic management to microservices and creates a basis for value-add capabilities like security, monitoring, routing, connectivity management and policy. The software is built using the battle-tested Envoy proxy from Lyft, and gives visibility and control over traffic without requiring any changes to application code. Istio gives CIOs a powerful tool to enforce security, policy and compliance requirements across the enterprise.