Question: Will I be charged for DynamoDB is it is inactive?

Answer

If you are using DynamoDB On-Demand capacity mode, you will not be charged for read and write requests for an inactive table. However, suppose you are using the Provisioned capacity mode. In that case, you will be charged for the read and write capacity you provisioned, regardless of whether or not the table is actively used.

In On-Demand capacity mode, DynamoDB automatically scales throughput up or down based on your application's traffic. You only pay for the read-and-write request per million requests (per-request pricing) and data storage, with no minimum fees or upfront commitments.

In Provisioned capacity mode, you can provision read and write capacity units for your table to meet the needs of your application. You are charged for the number of reads and write capacity units you provision, regardless of whether or not they are being used.

It's important to note that if you have the unused provisioned capacity, you can release it to reduce your costs. Also, DynamoDB has a feature called "Auto Scaling," which helps to automatically adjust the read and write capacity units of your table based on the traffic. This feature can help you to optimize costs and save money.

You can also use AWS Cost Explorer to monitor and optimize your DynamoDB costs and usage and set up budgets and alerts to help you stay within your budget.