Complete procedures with a way back.

Adopt existing provider objects through Terraform 1.15 import blocks, stable addresses, optional reviewed generated HCL, import-only saved plans, protected state, and a mandatory empty post-import plan.

Design a real module contract, keep provider and backend ownership in environment roots, pin releases, protect sensitive state in versioned encrypted S3 storage, use Terraform 1.15 native lockfiles, and rehearse upgrades and recovery.

Design, deploy and prove an Amazon S3 backup target with explicit object ownership, public-access blocking, SSE-KMS, version history, lifecycle controls, least-privilege roles, optional immutable retention and independent restore evidence.

Deploy a private Amazon Linux 2023 web host with CloudFormation change sets, no public IP or SSH, SSM endpoints and Session Manager, explicit network paths, least-privilege role, IMDSv2, encrypted EBS, audit, drift, and rollback.

Design exact trust, identity, boundary, S3-prefix, and KMS-key permissions; validate with Access Analyzer, simulate candidates/live role, test temporary credentials, audit CloudTrail, reduce unused access, rotate trust, revoke sessions, and roll back safely.