Picking a container registry comes down to your cloud provider and workflow. We compare Google Artifact Registry, Azure Container Registry, Docker Hub, and Harbor across cost, security, and ecosystem fit.
Every team that builds containerized apps needs a place to store and distribute images. But "best container registry" isn't a single answer — it depends heavily on which cloud you're already in, how much ops you want to do, and whether you need features beyond plain image storage.
Here's the short version: if you're on Google Cloud, use Google Artifact Registry. If you're on Azure, use Azure Container Registry. If you're cloud-agnostic and want simplicity, Docker Hub still works. And if you want full control with zero vendor lock-in, Harbor is the open-source answer.
Let's break down why.
Before comparing specific products, here are the dimensions that actually matter:
Google Artifact Registry (GAR) is a managed service for storing container images and other build artifacts, with multi-regional storage, built-in vulnerability scanning, and tight integration with Google Kubernetes Engine (GKE).1
What sets GAR apart is its unified artifact model. Beyond container images, it handles Maven, npm, and Python packages in the same registry — useful if you want a single source of truth for build artifacts across languages.1 It also replaces the older Google Container Registry (GCR), so if you're still on GCR, migrating is the natural path.
Pricing is pay-as-you-go with a 0.5 GB free tier for storage, which covers small projects and experimentation. Vulnerability scanning is built in and integrates with Google's security tooling.1
Who it's for: Teams already in Google Cloud, or anyone who wants a single registry for containers and language packages. The multi-artifact support is genuinely unique among these picks.
Who it's not for: Teams deeply invested in AWS or Azure — the native registries on those platforms offer better IAM and CI/CD integration for their ecosystems.
Azure Container Registry (ACR) is a managed Docker registry optimized for Azure services, with Azure AD integration, geo-replication, and ACR Tasks for automated build/test/push pipelines.2
ACR's standout feature is ACR Tasks, which lets you trigger image builds automatically on code commits or base-image updates — essentially a lightweight CI/CD pipeline built into the registry. Geo-replication lets you mirror images across Azure regions for lower pull latency in global deployments.2
Azure AD integration means your existing identity infrastructure handles access control — no separate auth system to manage. Content trust (image signing) is available for teams that need supply-chain security.2
The Basic tier starts at roughly $5/day, with Standard and Premium tiers adding more storage, throughput, and features like geo-replication.2
Who it's for: Azure-native teams who want zero-ops registry management with deep integration into Azure DevOps, AKS, and Azure AD.
Who it's not for: Teams not on Azure — the integration advantages don't carry over, and you'd be paying for ecosystem features you can't fully use.
Docker Hub is the industry-standard registry with seamless Docker Desktop integration. The Team Plan costs $15–16 per user/month and includes unlimited private repositories, unlimited pull rate, role-based access control, and audit logs.3
The key reason to pay for the Team Plan is unlimited pull rate. Docker Hub's free tier throttles image pulls, which can break CI/CD pipelines and cause intermittent deployment failures. The Team Plan removes that ceiling entirely.3
Docker Hub is cloud-agnostic — it works the same regardless of whether you deploy to AWS, GCP, Azure, or your own metal. That neutrality is its main advantage for small teams or startups that haven't committed to a cloud provider.
Who it's for: Small to mid-size teams not tied to a specific cloud, or anyone who values Docker-native tooling and simplicity over deep cloud integration.
Who it's not for: Larger teams where per-user pricing gets expensive, or teams that need built-in vulnerability scanning and image signing without add-ons.
Harbor is a CNCF graduated open-source container registry that you self-host. It includes Trivy vulnerability scanning, role-based access control, Cosign/Notary image signing, and registry replication between instances.4
Harbor's biggest advantage is full data control. Your images never leave your infrastructure, which matters for air-gapped environments, regulated industries, or organizations with strict data sovereignty requirements. Registry replication lets you sync images across multiple Harbor instances for redundancy and geographic distribution.4
It's free to self-host, but that "free" comes with a real cost: you need DevOps bandwidth to deploy, maintain, patch, and scale it. Harbor is well-engineered, but it's still infrastructure you own.
Who it's for: Security-conscious teams, air-gapped environments, and organizations that want zero vendor lock-in and have the DevOps capacity to run their own registry.
Who it's not for: Teams without dedicated DevOps resources, or small teams where the operational overhead isn't worth the control.
| Free Tier | Vuln Scanning | Pricing Model | |
|---|---|---|---|
| Google Artifact Registry | 0.5 GB storage | Built-in | Pay-as-you-go |
| Azure Container Registry | None (Basic ~$5/day) | Built-in | Tiered subscription |
| Docker Hub (Team) | 1 private repo | Add-on (Scout) | $15–16/user/month |
| Harbor | Free (self-hosted) | Trivy built-in | Free / self-hosted |
All four offer vulnerability scanning, but the implementations differ. GAR and ACR integrate scanning natively with their cloud security tooling. Harbor uses Trivy, a widely respected open-source scanner. Docker Hub offers scanning through Docker Scout as an add-on.
Pull-rate limits are the other key differentiator. Docker Hub's free tier throttles pulls — a real pain point for automated pipelines. The Team Plan removes that limit. Managed cloud registries (GAR, ACR) don't impose per-pull throttling. Harbor, being self-hosted, is limited only by your own infrastructure.
For most developers already in a cloud ecosystem, the native registry is the pragmatic choice — you get IAM integration, CI/CD hooks, and security tooling without extra configuration. Google Artifact Registry edges out the others as our overall pick because of its unique multi-artifact support and generous free tier, but if you're on Azure, ACR is the right call.
For cloud-agnostic or small teams, Docker Hub's simplicity is hard to beat — just pay for the Team Plan to avoid pull-rate throttling.
For security-conscious or air-gapped teams, Harbor is unmatched. It's free, it's CNCF-graduated, and it gives you complete control. Just make sure you have the DevOps bandwidth to run it.
AskBuy may earn a commission when you sign up through links on this page. That doesn't influence our recommendations — we pick based on what fits developer workflows, not affiliate payouts.
This page was written by the engine and the engine is still on the line. The conversation below picks up where the article stops.
Yes — the picks above are the engine's current verdicts. Ask a sharper version of this question below and you'll get a custom answer with the latest pricing.