# Azure Blob Storage

<figure><img src="/files/dGlZzKG0YDE4ILQviGoV" alt="" width="563"><figcaption></figcaption></figure>

Connect to a bucket in [Azure Blob Storage](https://azure.microsoft.com/en-us/products/storage/blobs) to browse and visualize your vector and/or raster data in Felt.

{% hint style="success" %}
This feature is only available to customers on the [Enterprise plan](https://felt.com/pricing). To upgrade, [contact sales](https://felt.com/sales).
{% endhint %}

1. Open **New data source** — from the workspace homepage, click **+** next to **Data sources**. Or from a map, click ![](/files/qv8POfyKJ00VfTgugMR2) in the toolbar and choose **+ New data source**.
2. Select `Azure Blob Storage`
3. Fill in the `Connection Details`
   1. `Source Name`: name of the source in Felt
   2. `Blob Storage Endpoint`: a URL to a bucket in Azure Blob Storage, such as\
      `https://my-account.blob.core.windows.net/my_bucket/my_prefix`.\
      \
      If the URL contains a prefix (in this example, `my_prefix`, Felt will only search for objects that start with it.
   3. `Credentials`: see the following [**Authentication**](#authentication) section below.
4. Click `Connect`
5. Once connected you will see a catalog of your data with previews for your new source
6. From here you can add any of these layers to your spatial dashboards!

### Authentication

For objects hosted in Azure Storage, provide a [connection string](https://learn.microsoft.com/en-us/azure/storage/common/storage-configure-connection-string#create-a-connection-string-using-a-shared-access-signature) to grant Felt access to your Azure storage account.

We recommend creating a dedicated [Shared Access Signature (SAS)](https://learn.microsoft.com/en-us/azure/storage/common/storage-sas-overview) with only **`Read`** and **`List`** permissions. Shared Access Signatures may be created at both the storage account level and the individual container level.

<details>

<summary>Creating an account-level SAS</summary>

* In Azure Portal, navigate to **`Storage Accounts`** and click on the desired account.
* In the left-hand sidebar, open the **`Security + networking`** dropdown and click on **`Shared access signature`**.
* Create a new SAS with access to all services and resources, and limit permissions to only **`Read`** and **`List`**.
* Click on **`Generate SAS and connection string`** and copy the **`Connection string`** to paste into Felt.

</details>

<details>

<summary>Creating a container-level SAS</summary>

* In Azure Portal, navigate to **`Storage Accounts`** and click on the desired account.
* In the left-hand sidebar click on **`Storage browser`**, then click on **`Blob containers`**.
* Identify the desired container and click on the three dots (**`…`**) at the far right of its row, then click on **`Generate SAS`**.
* Create a new SAS with access to all services and resources, and limit permissions to only **`Read`** and **`List`**.
* Click on **`Generate SAS and connection string`** and copy the **`Connection string`** to paste into Felt.

</details>

When inputting the Azure Connection String into Felt there should be no additional spaces:

{% code overflow="wrap" lineNumbers="true" %}

```
BlobEndpoint=https://adlsramodev.blob.core.windows.net/;SharedAccessSignature={YOUR SHARED ACCESS STRING}
```

{% endcode %}

### Supported file formats

Felt can read in spreadsheet, vector, and raster files from cloud storage connections. To see file formats supported see [Files](/upload-anything/files.md) in our [Upload Anything](/upload-anything/files.md)section.

{% hint style="success" %}
To skip Felt's data processing and stream in large, high-resolution raster files as cloud-optimized geotiffs directly from your cloud source, see [Raster infrastructure](/data-sources/raster-infrastructure.md).
{% endhint %}

### Raster metadata extraction

Felt can extract metadata properties from the filepaths to objects in your bucket. Learn more about Felt's Raster Infrastructure feature in [Organizing your raster data](/data-sources/raster-infrastructure/organizing-your-raster-data.md).


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