Variables

Terraform variables let you parameterize modules and reuse infrastructure code.

Why They Matter

• They reduce duplication.
• They make modules reusable across environments.
• They keep configuration values explicit.

Common Types

• string
• number
• bool
• list
• map
• object

Practical Notes

• Define types whenever possible.
• Use sensible defaults for safe local development.
• Keep secrets out of plain variables when they should be protected.