Add Azure Blob Storage cloud provider guide

fern/customization/provider-keys.mdx

@@ -27,11 +27,12 @@ Choose the provider, voice ID, and supported options in the assistant's `voice`
 ## Cloud Providers
 
 Vapi stores recordings of conversations with assistants in the cloud.  By default, Vapi stores these recordings in its
-own bucket in Cloudflare R2.  You can configure Vapi to store recordings in your own bucket in AWS S3, GCP, or
-Cloudflare R2. 
+own bucket in Cloudflare R2.  You can configure Vapi to store recordings in your own bucket in AWS S3, GCP,
+Cloudflare R2, or Azure Blob Storage. 
 
 You can find more details on how to configure your Cloud Provider keys here:
 
 - [AWS S3](/providers/cloud/s3)
 - [Google Cloud Storage](/providers/cloud/gcp)
 - [Cloudflare R2](/providers/cloud/cloudflare)
+- [Azure Blob Storage](/providers/cloud/azure)

fern/docs.yml

@@ -918,6 +918,9 @@ navigation:
                   - page: Cloudflare R2
                     path: providers/cloud/cloudflare.mdx
                     icon: fa-brands fa-cloudflare
+                  - page: Azure Blob Storage
+                    path: providers/cloud/azure.mdx
+                    icon: fa-brands fa-microsoft
                   - page: Supabase
                     path: providers/cloud/supabase.mdx
                     icon: fa-light fa-table

fern/providers/cloud/azure.mdx

@@ -0,0 +1,41 @@
+---
+title: Azure Blob Storage
+subtitle: Store recordings of chat conversations in Azure Blob Storage
+slug: providers/cloud/azure
+description: Store Vapi call recordings in Azure Blob Storage by configuring your connection string and container in Cloud Providers, uploading recordings when each conversation ends.
+---
+
+You can store recordings of your assistants' chat conversations in Azure Blob Storage when each conversation ends.
+
+## What is Azure Blob Storage
+
+Azure Blob Storage stores the recordings in a container in your storage account.
+
+## Connect Azure Blob Storage
+
+Container names must follow [Azure naming rules](https://learn.microsoft.com/en-us/rest/api/storageservices/naming-and-referencing-containers--blobs--and-metadata#container-names).
+
+<Steps>
+  <Step title="Find the connection string">
+    Use [Azure's storage account access key instructions](https://learn.microsoft.com/en-us/azure/storage/common/storage-account-keys-manage) to find your connection string.
+  </Step>
+  <Step title="Open cloud provider credentials">
+    In the Vapi dashboard, open **Provider Credentials** > **Cloud Providers**.
+  </Step>
+  <Step title="Enter the storage settings">
+    Enter the connection string and container settings listed below.
+  </Step>
+  <Step title="Save the credential">
+    Save the credential. Vapi uploads a small test file to the container to confirm the connection string and container work. If the container does not exist, Vapi creates it.
+  </Step>
+</Steps>
+
+## Settings reference
+
+Setting            | Description
+------------------ | -------------------------------------------------------
+Region             | The Azure region where the storage account is located
+Connection String  | The connection string for your Azure storage account
+Container Name     | The name of the container to upload recordings to
+Path               | An optional path prefix for recordings uploaded to the container
+Fallback Index     | Optional upload fallback position. Storage providers are tried in ascending order until one succeeds

fern/security-and-privacy/data-flow.mdx

@@ -419,6 +419,7 @@ Even with maximum custom configuration, certain data passes through Vapi's orche
 - [AWS S3](/providers/cloud/s3) - S3 bucket setup
 - [GCP Cloud Storage](/providers/cloud/gcp) - GCP bucket setup
 - [Cloudflare R2](/providers/cloud/cloudflare) - R2 setup
+- [Azure Blob Storage](/providers/cloud/azure) - Azure container setup
 
 ### Compliance
 - [HIPAA Compliance](/security-and-privacy/hipaa) - Healthcare data handling