I’m trying to implement a new AWS node. Inspecting what you already have, I see that you are using aws4 and Rest API for existing AWS nodes(SNS, SES, S3).
My question is: Can I use the aws-sdk for the new node or do I have to use the Rest API as well?
We prefer the REST API over SDKs. This helps in maintaining the size of the project. We only use SDKs when it is really necessary. Hence, I would suggest you use the REST API