#DynamoDB has two capacity modes: provisioned and on-demand.

• In provisioned capacity mode, you specify exactly the amount of read and write throughput you want. You pay for this capacity whether you use it or not.
• In DynamoDB on-demand capacity mode, you can pay per request. The cost per request is slightly higher than if you were to use provisioned throughput fully, but you don’t have to spend time doing capacity planning or worrying about getting throttled. On-demand mode works great for spiky or unpredictable workloads.