AWS Proton AWS CloudFormation Git Sync & AWS CodePipeline (Proton Migration)
Infrastructure-as-code GitOps synchronization and automated CI/CD pipeline services that replace deprecated AWS Proton environment and service templates.
Naming timeline
- AWS Proton
Launched as a managed platform-engineering service for versioned infrastructure-as-code environment and service templates.
- AWS CloudFormation Git Sync & AWS CodePipeline
AWS closed AWS Proton to new customers on October 7, 2025 (reaching end of support October 7, 2026) and published migration guidance to AWS CloudFormation Git Sync and AWS CodePipeline/CodeBuild.
What replaced AWS Proton?
AWS Proton has been superseded by AWS CloudFormation Git Sync & AWS CodePipeline (Proton Migration), with the latest change on 7 October 2025 (AWS Proton Deprecation & Migration (Proton EOS Oct 7, 2026)). Infrastructure-as-code GitOps synchronization and automated CI/CD pipeline services that replace deprecated AWS Proton environment and service templates. The underlying legacy API or CLI surface is deprecated, so a technical migration is required.
Also known as
- Proton
- CloudFormation Git Sync
Technical identifiers
Legacy identifiers deprecated. The underlying API or CLI surface for the legacy name is officially deprecated, so this change requires a technical migration rather than a label update.
| AWS Service APIs / SDKs | cloudformation codepipeline codebuild proton |
|---|---|
| AWS CLI Commands | aws cloudformation aws codepipeline aws proton |
| IAM Actions & Policies | cloudformation:* codepipeline:* proton:* |
| Terraform Resources (aws_*) | aws_cloudformation_stack aws_codepipeline aws_codebuild_project |
The proton API, aws proton CLI, and proton:* IAM actions reach end of support on October 7, 2026 in favor of AWS CloudFormation Git Sync (cloudformation) and AWS CodePipeline (codepipeline).
Notes & disambiguation
- On October 7, 2025, AWS announced the discontinuation of AWS Proton, closing the service to new customers immediately and setting the official end-of-support date for October 7, 2026.
- When AWS Proton reaches end of support on October 7, 2026, the AWS Proton console and proton API resources will cease operating, while underlying CloudFormation stacks and infrastructure provisioned by Proton remain intact.
- Official AWS Proton deprecation guidance directs platform teams to migrate template-based workflows to AWS CloudFormation Git Sync, AWS CodePipeline and AWS CodeBuild, Harmonix on AWS (Backstage), or GitHub Actions.
Sources & official documentation
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