Sera utilizado 2 contas na AWS Contas A e Conta B
Passo 1 - CONTA-A-ID Criar uma ROLE com a seguinte policy. (your-role-name-in-aws1)
IAM >> Roles >> >> Permissions >>
<iam_policy.json>
#########################################################################################################################
Passo 2 - CONTA-A-ID Criar um Lambda com a role atachada (Change default execution role) Escolher a role ja criada!
<lambda.js>
OU
<lambda python 3.6>
#########################################################################################################################
Passo 3 - CONTA-B-ID
Criar um bucket
Colocar a policy no bucket criado Amazon S3 >> Buckets >> Bucket policy
<bucket_policy.json>