> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/continuous-delivery/3.0/new-to-deployments/cd-integrations.md).

# What's Supported

This page lists the deployment targets, manifest stores, and artifact sources supported in Harness Deployments.

{% tabs %}
{% tab title="Deployments" %}

### Kubernetes <a href="#kubernetes" id="kubernetes"></a>

**Supported deployment strategies**

| Strategy     | Description                                                                             |
| ------------ | --------------------------------------------------------------------------------------- |
| Rolling      | Incrementally replaces pods batch by batch with automatic rollback                      |
| Canary       | Deploys a subset of pods alongside stable pods, then promotes with a rolling deploy     |
| Blue-green   | Maintains two pod sets and swaps service selectors at cutover                           |
| Blank canvas | No managed steps — build your own sequence for Jobs, CronJobs, and supporting resources |

**Supported manifest types**

K8s Manifest, Values YAML, Helm Chart, Kustomize, Kustomize Patches, OpenShift Template

**Supported infrastructure providers**

Kubernetes (direct), Google Kubernetes Engine (GKE), Microsoft Azure (AKS), Amazon Elastic Kubernetes Service (EKS), Rancher

**Other**

| Capability                                | Supported |
| ----------------------------------------- | --------- |
| OpenShift (DeploymentConfig, `oc` client) | ✅         |
| Server-side apply                         | ✅         |
| Manifest pruning                          | ✅         |
| Automatic rollback on failure             | ✅         |
| Kubernetes Steady State Check             | ✅         |
| Harness release history tracking          | ✅         |
| Delegate 1.0 and Delegate 3.x             | ✅         |

***

### Helm <a href="#helm" id="helm"></a>

**Supported deployment strategies**

| Strategy     | Description                                                                               |
| ------------ | ----------------------------------------------------------------------------------------- |
| Basic deploy | Runs `helm upgrade --install` in a single phase                                           |
| Canary       | Deploys a canary Helm release at a specified instance count, then deletes after promotion |
| Blue-green   | Deploys to a stage Helm release, swaps traffic, then cleans up the old release            |

**Supported Helm versions**

| Version | Support    |
| ------- | ---------- |
| Helm V3 | ✅          |
| Helm V2 | Deprecated |

**Supported chart store types**

Harness Code, GitHub, Git, GitLab, Bitbucket, Azure Repos, Amazon S3, Google Cloud Storage, HTTP Helm

**Other**

| Capability                    | Supported                               |
| ----------------------------- | --------------------------------------- |
| `helm test` after deploy      | ✅                                       |
| Server-side chart rendering   | ✅                                       |
| Automatic rollback on failure | ✅ (via Helm Rollback step)              |
| Ignore failed release history | ✅                                       |
| Manifest pruning              | ❌ (Helm manages release state natively) |
| Delegate 1.0 and Delegate 3.x | ✅                                       |
| {% endtab %}                  |                                         |

{% tab title="Manifest Sources" %}
Manifests and config files can be stored in the following sources. The table shows which sources are supported per manifest type.

| Manifest type      | Harness Code | GitHub | Git | GitLab | Bitbucket | Azure Repos | AWS S3 | Google Cloud Storage | HTTP Helm | Custom Remote |
| ------------------ | :----------: | :----: | :-: | :----: | :-------: | :---------: | :----: | :------------------: | :-------: | :-----------: |
| K8s Manifest       |       ✅      |    ✅   |  ✅  |    ✅   |     ✅     |      ✅      |        |                      |           |       ✅       |
| Values YAML        |       ✅      |    ✅   |  ✅  |    ✅   |     ✅     |      ✅      |    ✅   |                      |           |       ✅       |
| Kustomize          |       ✅      |    ✅   |  ✅  |    ✅   |     ✅     |      ✅      |        |                      |           |               |
| Kustomize Patches  |       ✅      |    ✅   |  ✅  |    ✅   |     ✅     |      ✅      |        |                      |           |       ✅       |
| OpenShift Template |       ✅      |    ✅   |  ✅  |    ✅   |     ✅     |      ✅      |        |                      |           |       ✅       |
| Helm Chart         |       ✅      |    ✅   |  ✅  |    ✅   |     ✅     |      ✅      |    ✅   |           ✅          |     ✅     |               |
| {% endtab %}       |              |        |     |        |           |             |        |                      |           |               |

{% tab title="Artifacts" %}
The table shows which artifact sources are supported per deployment type.

| Deployment type | Harness Artifact Registry | Docker Hub | Amazon ECR | GCR\* | ACR | Artifactory | Nexus 3 | Google Artifact Registry | GitHub Package Registry | Custom |
| --------------- | :-----------------------: | :--------: | :--------: | :---: | :-: | :---------: | :-----: | :----------------------: | :---------------------: | :----: |
| Kubernetes      |             ✅             |      ✅     |      ✅     |   ✅   |  ✅  |      ✅      |    ✅    |             ✅            |            ✅            |    ✅   |
| Helm            |             ✅             |      ✅     |      ✅     |   ✅   |  ✅  |      ✅      |    ✅    |                          |            ✅            |    ✅   |

**GCR** is deprecated. Migrate to Google Artifact Registry.
{% endtab %}
{% endtabs %}