Most enterprises still running on-premises Hadoop are paying far more than they need to — in infrastructure costs, engineering time, and missed AI capability. Databricks, built by the original creators of Apache Spark, is the modern replacement: a fully managed cloud lakehouse that delivers 10–100× faster query performance, ACID-compliant Delta Lake storage, and unified data engineering, ML, and BI workloads on a single platform. As a certified Databricks partner, this is our practical playbook for executing the migration.