D4L runs the permissively-licensed open-source data stack (Apache NiFi, Trino, Ceph, OpenSearch, PostgreSQL, Cassandra, Kafka, Airflow, Superset, OpenSearch Dashboards, Prometheus, Iceberg, Keycloak, Kubernetes) on bare-metal hardware Deasil Works owns across six U.S. facilities. Fixed monthly cost in the hundreds of dollars, not Snowflake bills in the tens of thousands. No per-seat licensing. No license-change ambushes (MongoDB 2018, Elastic 2021, HashiCorp 2023, Redis 2024). Pipelines you can