S3 Storage Patterns
Apply the three most important S3 operational patterns: versioning with lifecycle policies to control storage costs, cross-region replication for disaster recovery, and pre-signed URLs for secure temporary access without exposing credentials.
Prerequisites: An AWS account, AWS CLI v2 configured, and two S3-accessible regions available in your account.
S3 is one of those services where the defaults are fine for a quick demo but quietly expensive or risky at scale. The three patterns this project covers — versioning with lifecycle management, cross-region replication, and pre-signed URLs — each solve a real production problem: uncontrolled storage growth from deleted/overwritten objects, no recovery path after a regional failure, and exposing credentials by sharing bucket access directly.
Each pattern builds on the previous one. You can stop after any of the three if time is short, but all three together represent the minimum viable S3 setup for any production workload that stores data you'd care about losing.
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