ZSmart Database as a Service (DBaaS) is a cloud database platform that supports a variety of database engines; with an architecture separating storage from compute, ZSmart DBaaS greatly guarantees the performance of the database on the cloud. ZSmart DBaaS features a full lifecycle of database management, from upgrades, backups, and recovery to intelligent maintenance, streamlining processes so that users can concentrate on businesses. The multi-tenant model of ZSmart DBaaS improves resource utilization and reduces initial investment costs.