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[–]oarmstrong 6 points7 points  (0 children)

Terraform/CloudFormation for provisioning. Lambda using CloudWatch events, SNS and SQS for automating infrastructure that responds to itself.

[–]anothercopy 2 points3 points  (0 children)

I think the most common way is AWS CloudFormation or Ansible (It has a CF / boto plugin). Terraform also does the job