Single service comparison

Migration to Huawei

• Map engine/version compatibility, HA topology, replication mode, and backup/restore behavior. For Azure Azure Cosmos DB, the direct Huawei equivalence layer is GeminiDB + DDS; validate feature-by-feature parity for control plane, data plane, and operational behavior before cutover.
• Use a composed Huawei migration pattern where needed: DDS + GeminiDB + DRS. Treat GeminiDB + DDS as the core equivalent capability and use the additional services to cover integration, security, observability, and governance gaps.
• Pricing model difference: Azure usually bills throughput units/requests plus storage and backup; Huawei usually bills RDS/GaussDB/DDS runtime or DRS task billing plus storage, backup, and transfer. Recalculate TCO with peak load, request volume, retention period, and cross-region/interconnect traffic before production migration.