With each lambda invoke either with AWS API or API Gateway HTTP, kms usage is increasing while I haven't added any key management with KMS. Is this indirect cost by aws on lambda usage or there is option to disable kms on lambda invoke.
1 Answers
Each AWS account has a default KMS managed key to encrypt/decrypt the data store and connections.
There should be a section to ask you if you want to encrypt/protect your data when you create Lambda/EC2/DBs, if you click yes, then the default key will be used.
That's how you get charged. You can ask their customer service, and they may refund with unnecessary calls.
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