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• Use security groups to restrict traffic (e.g., only SSH or HTTPS).
• Pin provider versions in main.tf for reproducibility.
• Use terraform plan before every apply.
• Always add informative tags (tags = {…}) for easier costs traceability and administration.
• Consider versioning/backing up the main.tf  you created, as well as the terraform.tfstate file that resulted from the execution, using for example git, . This helps to avoid loosing track of your the resources' state.

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