From SSH to REST: A Security-Driven Modernization of Slack’s EMR Data Pipelines

This post details the modernization of Slack's EMR data pipelines, moving from SSH to REST. It focuses on security-driven improvements and the integration with Shipyard, Slack's next-generation EC2 platform. The post outlines the architectural changes, the security considerations addressed, and the technical challenges overcome in this migration, including the use of Prometheus for network probing and HTTP/3 readiness.