diff --git a/AZURE.md b/AZURE.md
index de5b07ef..50edb6e7 100644
--- a/AZURE.md
+++ b/AZURE.md
@@ -38,7 +38,9 @@ Start the server with the following run profiles enabled: `prod,secure,azure`
 
 ## Client Setup
 Follow the regular client setup of access token and storage and metadata urls.
-However when running the client use azure pofile option:
+However when running the client use azure profile option:
 ```bash
 $ bin/score-client --profile azure ...
-```
\ No newline at end of file
+```
+
+Upload block size for Azure can be configured with the `azure.blockSize` configuration property.
diff --git a/score-client/README.md b/score-client/README.md
index e40cb862..3e5d1590 100644
--- a/score-client/README.md
+++ b/score-client/README.md
@@ -77,3 +77,6 @@ To enable logging of request bodies and headers, append the following to the com
 
 `--logging.level.org.apache.http=DEBUG`
 
+## Azure
+For azure support, use the `azure` profile. Block sizes for uploads
+can be configured with the `azure.blockSize` property. 
\ No newline at end of file
diff --git a/score-client/src/main/java/bio/overture/score/client/upload/azure/AzureUploadService.java b/score-client/src/main/java/bio/overture/score/client/upload/azure/AzureUploadService.java
index 83978b44..d62b367b 100644
--- a/score-client/src/main/java/bio/overture/score/client/upload/azure/AzureUploadService.java
+++ b/score-client/src/main/java/bio/overture/score/client/upload/azure/AzureUploadService.java
@@ -49,8 +49,8 @@ public class AzureUploadService implements UploadService {
   @Value("${transport.parallel}")
   private int parallelUploads;
 
-  // Azure used to have a 4MiB maximum part size, it has been since increased. Setting to 100MiB for now.
-  private final static int BLOCK_SIZE = 100 * 1024 * 1024;
+  @Value("${azure.blockSize:104857600")
+  private int blockSize = 100 * 1024 * 1024;
 
   @Override
   public void upload(File file, String objectId, String md5, boolean redo) throws IOException {
@@ -58,7 +58,7 @@ public void upload(File file, String objectId, String md5, boolean redo) throws
     val spec = storageService.initiateUpload(objectId, file.length(), redo, md5);
 
     // Calculate expected number of parts to track progress against
-    val partInfo = calculateNumBlocks(file.length(), BLOCK_SIZE);
+    val partInfo = calculateNumBlocks(file.length(), blockSize);
 
     // Will contain one Part as far as Storage Service is concerned. There is no need for more than one SAS to be
     // generated for an entire file; each Part does not require its own pre-signed URL.
@@ -83,7 +83,7 @@ public void upload(File file, String objectId, String md5, boolean redo) throws
 
         @Override
         public void eventOccurred(ResponseReceivedEvent eventArg) {
-          long bytesSent = BLOCK_SIZE;
+          long bytesSent = blockSize;
           int partCount = completedParts.incrementAndGet();
 
           if (partCount <= partInfo.getLeft()) {
@@ -99,7 +99,7 @@ public void eventOccurred(ResponseReceivedEvent eventArg) {
 
         @Override
         public void eventOccurred(ResponseReceivedEvent eventArg) {
-          long bytesSent = BLOCK_SIZE;
+          long bytesSent = blockSize;
           int partCount = completedParts.incrementAndGet();
 
           if (partCount <= partInfo.getLeft()) {
@@ -122,7 +122,7 @@ public void eventOccurred(RetryingEvent eventArg) {
 
       val options = new BlobRequestOptions();
       options.setConcurrentRequestCount(parallelUploads);
-      blob.setStreamWriteSizeInBytes(BLOCK_SIZE);
+      blob.setStreamWriteSizeInBytes(blockSize);
 
       progress.start();
       progress.startTransfer();
diff --git a/score-client/src/main/resources/application.yml b/score-client/src/main/resources/application.yml
index 40d955ba..5f515f96 100644
--- a/score-client/src/main/resources/application.yml
+++ b/score-client/src/main/resources/application.yml
@@ -98,6 +98,17 @@ client:
     
 ---
 
+###############################################################################
+# Profile - "azure"
+###############################################################################
+
+spring.profiles: azure
+
+azure:
+  blockSize: 104857600
+
+---
+
 ###############################################################################
 # Profile - "kf"
 ###############################################################################
@@ -130,7 +141,7 @@ metadata:
   
 client:    
   ssl:
-    custom: false  
+    custom: false
 
 ---