Migration Guide
Migrate from Cloud Storage to S3
Migrate Google Cloud Storage to AWS S3. Use rclone or AWS DataSync, remap IAM and lifecycle rules.
What you get
Risk assessment
Blockers, warnings, and unknowns ranked by severity
Effort estimate
Hours, t-shirt size, and role breakdown
Cost estimate
Labor, infrastructure, and tooling cost range
Migration steps
Ordered execution plan with durations
Open questions
What still needs to be answered before you start
Draft config or code
Starter configs when the migration path supports it
Why teams migrate from Cloud Storage to S3
Good fit when
- +Teams moving storage alongside compute to AWS.
- +Organizations needing S3-specific features (Object Lock, S3 Select, Glacier).
- +Teams in AWS-heavy environments wanting consistent IAM.
Strengths
- Broadest storage class options including Glacier for deep archive.
- S3 Select enables querying data in-place without full retrieval.
- Largest ecosystem of S3-compatible tools and integrations.
Tradeoffs
- Cloud Storage uniform access simplicity is replaced by more granular S3 policies.
- Storage Transfer setup needs replacement with AWS DataSync or rclone.
- GCP-specific analytics integrations need AWS equivalents (Athena, Glue).
Migration notes
- Use rclone or AWS DataSync for data migration.
- Remap Cloud Storage IAM to S3 bucket policies and IAM policies.
- Translate lifecycle rules and storage class mappings.
- Update application code to use AWS SDK or maintain S3-compatible endpoints.
How it works
Describe your migration
Select Cloud Storage as source and S3 as target. Add context about your setup — configs, docs, architecture notes.
Keshro runs the analysis
Keshro researches the path, finds similar past migrations, and generates a structured assessment with risks, effort, cost, and steps.
Get your plan
Review the migration plan, refine it with your team, and use it as a living document during execution.
Related migrations
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