What are the main features of DynamoDB?

Some key features of DynamoDB include:

1. High scalability: DynamoDB is a serverless cloud database service that automatically scales to handle high traffic and large data sets.
2. High performance: DynamoDB offers low-latency read and write operations, capable of handling millions of requests.
3. Reliability and Durability: DynamoDB replicates data across multiple availability zones to ensure the durability and high availability of data.
4. Flexible data model: DynamoDB is a key-value storage database that supports complex data structures like nested objects and arrays.
5. DynamoDB has powerful query capabilities, supporting both global secondary indexes and local secondary indexes for creating indexes based on different query requirements.
6. Data security and permission control: DynamoDB offers granular access control and data encryption to protect the security of data.
7. Low cost: DynamoDB’s pricing is based on usage, without any minimum fee restriction, making it suitable for applications of all sizes.

In general, DynamoDB is a highly scalable, high-performance, reliable, flexible, and secure cloud database service.