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

Excerpt By 2024, Slack s data platform had accumulated 700+ SSH-based operators orchestrating critical data pipelines. We re talking daily search indexing that processed terabytes of data, analytics jobs powering business intelligence, the whole shebang. Every single one of these jobs required direct SSH access to production AWS Elastic MapReduce (EMR) clusters. We had a massive security