Where to save AWS_ACCESS_ID and AWS_SECRET_KEY in elasticbean stalk application

I was going to say the same as Riku. You should be able to use Roles. Of course AWS has secret manager and SSM parameter store where you can save encrypted versions of these. SSM and SM differ slightly though.

Hi, I fully agree with Riku: storing AWS_SECRET_KEY on AWS itself is a bad practice. Execution roles are a much safer solution. Good guidance is https://docs.aws.amazon.com/accounts/latest/reference/credentials-access-keys-best-practices.html

See section "Use temporary security credentials (IAM roles) instead of long-term access keys"

Thanks everyone for answering, that was really helpful.