Multi-Cloud Lakehouse Blueprint: Migration Guide — Azure-Only to Multi-Cloud Lakehouse

Migration Guide — Azure-Only to Multi-Cloud Lakehouse Datanest Digital — datanest.dev Overview This guide provides a structured approach for organizations currently running Databricks exclusively on Azure to extend their lakehouse to include AWS. It covers assessment, planning, phased execution, validation, and cutover. 1. Migration Phases Phase 0 Phase 1 Phase 2 Phase 3 Phase 4 Assessment ──► Foundation ──► Data Layer ──► Workloads ──► Operations (2 weeks) (4 weeks) (4 weeks) (4 weeks) (Ongoing) - Inventory - AWS account - Unity Catalog - Migrate - Monitoring - Dependencies - Networking - Delta Sharing selected - DR drills - Cost model - IAM federation - Replication workloads - Cost review - Go/no-go - Terraform - Validation - CI/CD - Optimization 2. Phase 0: Assessment (Weeks 1–2) 2.1 Workload Inventory Catalog all existing Azure Databricks workloads: Category What to Document Workspaces Names, regions, SKU (Premium/Standard), VNet injection status Clusters Types (all-purpose, job, S