Migration Guide
Migrate from Lambda to Cloud Functions
Migrate AWS Lambda functions to Google Cloud Functions. Remap triggers, IAM, layers, and runtime configurations.
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 Lambda to Cloud Functions
Good fit when
- +Teams migrating serverless workloads to GCP alongside other service migrations.
- +Functions triggered by events (HTTP, storage, queues) that map to GCP event sources.
- +Teams wanting simpler deployment and scaling configuration.
Strengths
- Cloud Functions integrates natively with GCP event sources (Pub/Sub, Cloud Storage, Firestore).
- Simpler deployment model with fewer configuration options to manage.
- Native integration with Cloud Monitoring and Cloud Trace for observability.
Tradeoffs
- Lambda layers have no direct Cloud Functions equivalent; dependencies must be bundled.
- Lambda@Edge and Lambda function URLs have different Cloud Functions equivalents.
- Cold start characteristics and runtime support differ between platforms.
Migration notes
- Map Lambda triggers (API Gateway, S3, SQS, EventBridge) to GCP equivalents (HTTP, Cloud Storage, Pub/Sub, Eventarc).
- Bundle Lambda layer dependencies directly into Cloud Functions deployment packages.
- Translate Lambda IAM execution roles to GCP service accounts.
- Update environment variable references and secrets management to GCP Secret Manager.
How it works
Describe your migration
Select Lambda as source and Cloud Functions 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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