Cosmos DB Migration

The Cosmos DB Migration Tool provides planning and estimation for migrating data between Cosmos DB accounts, clusters, or regions. It focuses on project scoping, throughput budgeting, data fidelity, and risk assessment. It does not perform data movement; instead it outputs a concrete migration plan, resource estimates, and validation steps that guide execution by downstream processes.
Target users include data engineers, database administrators, cloud architects, and migration leads who must justify capacity, timeline, and approvals before starting a migration window. The tool is equally valuable for one-time cuts and recurring migration pipelines.
How it works conceptually: users provide source and destination configurations, database and container mappings, and optional transformation rules. The tool analyzes container schemas, partition keys, and indexing policies, then estimates RU/s impact, data volume, and timing based on observed patterns and best practices. It generates an ordered migration plan with steps, prerequisites, validation checkpoints, and rollback considerations. Optional capabilities include parallelized execution planning, incremental migration, change data capture hooks, and post-migration validation reports. Outputs are exportable for automation and archival.
Value, differentiators, and use cases: The integration of domain-aware mappings, throughput budgeting, and risk scoring in a single artifact reduces planning cycles, improves accuracy, and reduces downtime risk. Core features include a container mapping editor, RU/s estimator, validation checks, risk scoring, and exportable plan payloads. Use cases include cross-region migrations, schema upgrades, architectural refactors, disaster-recovery rehearsals, and multi-tenant deployments. Unique value lies in proactive planning that aligns engineering, operations, and security teams before any data movement occurs.