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Slack removed SSH-based job execution from its Amazon EMR pipelines, migrating over 700 Airflow operators to a REST-driven orchestration layer called Quarry. The shift eliminated direct SSH access to production clusters, improving security, reliability, and observability across eight data regions. Jobs now follow a server-side lifecycle with HTTP APIs instead of persistent SSH sessions.

Upriver raised $14M to automate data pipeline cleanup for enterprise AI. The seed round was led by Valley Capital Partners and Hetz Ventures. The platform connects to Snowflake, Databricks, BigQuery, Airflow, and dbt, then builds and fixes pipelines. Unity and DMGT already use it.
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