TiDB Serverless and Amazon RDS are compared to determine the best cloud database service.
Scalability: Amazon RDS requires selecting an instance size and lacks the ability to scale down to zero, while TiDB Serverless offers autonomous capacity ramp-up and scales both reads and writes without single node bottlenecks.
Reliability: TiDB Serverless provides automated failover and strong ACID guarantees, while Amazon RDS requires manual setups and has higher costs for redundancy.
Developer-Friendly Features: TiDB Serverless offers built-in AI features and greater flexibility as an open-source solution, while Amazon RDS simplifies database management within AWS.