What it does
AWS CodeArtifact is a managed package repository for software teams. A repository can hold private packages, proxy an external registry such as npm or Maven Central, and share packages with other repositories in the same domain. Build systems and package managers use its endpoint to publish and retrieve dependencies. That places CodeArtifact in the dependency and artifact-management stage of delivery, before or alongside compilation and testing. Users need AWS credentials and CodeArtifact authorization, and package repositories cannot be made public.
Put package dependencies behind a team repository
CodeArtifact is useful when an organization wants a controlled source for build dependencies and internal packages. Begin by creating an AWS account, configuring the AWS CLI and permissions, and creating a CodeArtifact domain and repository. Then configure a supported package manager such as npm, Maven, NuGet, Python's pip, or Ruby's gem tools to use the repository endpoint. The official guide describes the next steps for connecting an upstream public repository or publishing private packages.
An example build can request a package from CodeArtifact while compiling an application; the repository can fetch a dependency from npm or Maven Central on demand and retain it for later use. Internal libraries can be published to the same domain and shared with downstream repositories. This is an artifact and dependency layer, not a build runner: pair it with a CI service to execute compilation and tests.
Access and billing boundaries
AWS CodeArtifact authenticates package consumers and publishers with AWS credentials and authorization tokens. Its documentation explicitly says repository packages cannot be public, which rules it out for projects that need anonymous public distribution. The AWS pricing page describes pay-as-you-go charges for stored artifacts, requests, and eligible data transfer, with a monthly Free Tier for storage and requests. Check the pricing page for the service region and transfer patterns that match the build environment before estimating a large package cache.
This listing describes the managed AWS service; the package formats it stores remain separate from the repository's billing and account model.
Strengths
- Supports common package formats and package managers in a managed repository service.
- Can proxy public package sources and share internal packages through domains and upstream repositories.
- Provides a monthly Free Tier for storage and requests, with consumption billing beyond the included allowances.
Watch out for
- Packages in CodeArtifact repositories cannot be made publicly available.
- Consumers and publishers need AWS credentials and an authorization token.
- Requests, stored artifacts, and some data transfers contribute to usage charges.
Best for
- Build pipelines that need a private source for dependencies and internal packages
- Organizations standardizing package access across npm, Maven, NuGet, Python, or Ruby projects
- Teams that want to proxy public package registries and share packages across AWS accounts or repositories
Sources
- Artifact Repository – AWS CodeArtifact – AWS (Oct 25, 2026)
- What is AWS CodeArtifact? - CodeArtifact (Oct 25, 2026)
- AWS CodeArtifact Pricing (Oct 25, 2026)