intermediate~4h
Terraform State Management
Why Terraform needs a state file at all, the classic S3-plus-DynamoDB remote backend pattern, the danger of manual drift, and how state locking prevents two people from corrupting the same infrastructure at once.
Learning objectives
- Intermediate: Explain why Terraform state exists and what information it holds that configuration files alone cannot provide.
- Intermediate: Configure a remote backend using S3 and a DynamoDB lock table, and explain why each piece is necessary.
- Intermediate: Describe how manual out-of-band changes cause drift, and why state locking prevents concurrent-apply corruption.
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Terraform State Management