Terraform workspaces provide separate state instances for the same configuration. Use cases: dev/staging/prod environments. Alternatives: directory-per-environment, Terragrunt, and Terraform Cloud workspaces. Variable files (.tfvars) customize behavior per environment. Each approach has trade-offs for isolation and DRY-ness.
The 5-Mode Loop
5 of 5 modes available
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Before this, understand: tf modules