Amazon Web Services (AWS) made available a feature called “DynamoDB”, a service that has already been powering parts of AWS for years, but was never directly exposed.

Amazon DynamoDB is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability.

Solid State Drives
Amazon DynamoDB runs exclusively on Solid State Drives (SSDs). SSDs provides low-latency response times for storing and accessing data and high load balancing capabilities.There are no limits on the request capacity or storage size for a given table.

Amazon DynamoDB is designed to maintain predictably high performance and to be highly cost efficient for workloads of any scale, from the smallest to the largest internet-scale applications. You can get started with Amazon DynamoDB using a free tier that enables 40 million of requests per month free of charge.

P.S. List of NoSQL databases —> NoSQL DB